Merge PR #104: refactor: remove the CWU heater, the house has none

backend/README.md

@@ -10,7 +10,7 @@ the three values are null (`pi-sensor-stale.json`).
 
 `GET /api/stats?range=7d|30d` (example `src/test/resources/api/stats.json`; 400 otherwise, 502 when InfluxDB is down) is the heat pump per local
 day (Europe/Warsaw, today included) from the raw `heat_pump` polls: `days[]` with `date`, `compressorHours`, `compressorStarts`, `cwuHours`, `coHours`,
-`heaterHours`, `avgOutdoorTemp`, `minCwuTemp`, `maxCwuTemp` (all null on a day without polls) and `totals` over the range. A poll holds its outputs
+`avgOutdoorTemp`, `minCwuTemp`, `maxCwuTemp` (all null on a day without polls) and `totals` over the range. A poll holds its outputs
 until the next one, at most 600 s, so gaps add no hours; a start is a poll above 0 after a poll at 0, so the 300 s polling misses short cycles.
 
 `GET /api/program?days=14` (7 to 30, default 14; 400 otherwise, 502 when InfluxDB is down; example `src/test/resources/api/program.json`) is the weekly
@@ -18,8 +18,7 @@ program as the history shows it, not read from the controller: `weekdays[]` from
 `comfort` (intervals `from`/`to`, local "HH:MM", "24:00" at midnight), `observedDays`, `agreeingDays` and `confidence` (`confirmed`: at least
 two days of that weekday agree within 5 minutes, `seen_once`, `no_data`). A boundary is the middle between the two polls where the period
 changes (`Periods`), rounded to 5 minutes; an override, ambiguous setpoints (e.g. during our writes) or a gap over 600 s drop the interval.
-Today is left out. `/api/heat-pump` has `periods` (`cwu`, `room`: `comfort`, `economy`, `unknown`, `override`; `program`, `programText`),
-and `heaterOn` is also true while `zb_state` = 2.
+Today is left out. `/api/heat-pump` has `periods` (`cwu`, `room`: `comfort`, `economy`, `unknown`, `override`; `program`, `programText`).
 
 `GET /api/battery` is the Deye battery, example `src/test/resources/api/battery.json`: live `socPct`, `powerW` (+ discharge / − charge), `voltageV`,
 `currentA`, `temperatureC`, `today` and `total` energy (`chargeKwh`, `dischargeKwh`), null when the Deye is stale (older than 10 min or down).

backend/src/main/java/home/backend/adapters/influx/InfluxSamples.java

@@ -22,7 +22,7 @@ final class InfluxSamples {
     }
 
     static String query(long fromMs, long toMs) {
-        return "SELECT output_compressor, output_cwu, output_co, output_heater, outdoor_temp, cwu_temp,"
+        return "SELECT output_compressor, output_cwu, output_co, outdoor_temp, cwu_temp,"
                 + " program, target_room_temp, target_cwu_temp, setpoint_co_economy, setpoint_co_comfort,"
                 + " setpoint_cwu_economy, setpoint_cwu_comfort"
                 + " FROM \"heat_pump\" WHERE time >= " + fromMs + "ms AND time < " + toMs + "ms";
@@ -43,8 +43,8 @@ final class InfluxSamples {
             for (JsonNode series : result.path("series")) {
                 for (JsonNode row : series.path("values")) {
                     samples.add(new HeatPumpSample(Instant.ofEpochMilli(row.get(0).asLong()),
-                            number(row, 1), number(row, 2), number(row, 3), number(row, 4),
-                            number(row, 5), number(row, 6), periods(row)));
+                            number(row, 1), number(row, 2), number(row, 3),
+                            number(row, 4), number(row, 5), periods(row)));
                 }
             }
         }
@@ -52,9 +52,9 @@ final class InfluxSamples {
     }
 
     private static Periods periods(JsonNode row) {
-        var targets = new Targets(number(row, 8), null, number(row, 9));
-        var setpoints = new Setpoints(whole(row, 10), whole(row, 11), whole(row, 12), whole(row, 13));
-        return Periods.of(whole(row, 7), targets, setpoints);
+        var targets = new Targets(number(row, 7), null, number(row, 8));
+        var setpoints = new Setpoints(whole(row, 9), whole(row, 10), whole(row, 11), whole(row, 12));
+        return Periods.of(whole(row, 6), targets, setpoints);
     }
 
     private static Integer whole(JsonNode row, int column) {

backend/src/main/java/home/backend/application/DayTally.java

@@ -13,7 +13,6 @@ final class DayTally {
     private double compressorSeconds;
     private double cwuSeconds;
     private double coSeconds;
-    private double heaterSeconds;
     private int starts;
     private int samples;
     private double outdoorSum;
@@ -39,7 +38,6 @@ final class DayTally {
         compressorSeconds += on(s.compressor()) ? seconds : 0;
         cwuSeconds += on(s.cwu()) ? seconds : 0;
         coSeconds += on(s.co()) ? seconds : 0;
-        heaterSeconds += on(s.heater()) ? seconds : 0;
     }
 
     void start() {
@@ -50,7 +48,6 @@ final class DayTally {
         compressorSeconds += other.compressorSeconds;
         cwuSeconds += other.cwuSeconds;
         coSeconds += other.coSeconds;
-        heaterSeconds += other.heaterSeconds;
         starts += other.starts;
         samples += other.samples;
         outdoorSum += other.outdoorSum;
@@ -63,15 +60,15 @@ final class DayTally {
 
     Day day(LocalDate date) {
         if (samples == 0) {
-            return new Day(date, null, null, null, null, null, null, null, null);
+            return new Day(date, null, null, null, null, null, null, null);
         }
         return new Day(date, hours(compressorSeconds), starts, hours(cwuSeconds), hours(coSeconds),
-                hours(heaterSeconds), avgOutdoor(), minCwu, maxCwu);
+                avgOutdoor(), minCwu, maxCwu);
     }
 
     Totals totals() {
         return new Totals(hours(compressorSeconds), starts, hours(cwuSeconds), hours(coSeconds),
-                hours(heaterSeconds), avgOutdoor(), minCwu, maxCwu);
+                avgOutdoor(), minCwu, maxCwu);
     }
 
     static boolean on(Double output) {

backend/src/main/java/home/backend/application/HeatPumpService.java

@@ -23,7 +23,6 @@ import static home.backend.application.SnapshotFields.whole;
 public class HeatPumpService {
 
     private static final String DATABASE = "Dom_Pompa";
-    private static final int HEATER_STATE = 2;
     private static final State[] STATES = State.values();
 
     private final GatewayClient gateway;
@@ -49,7 +48,7 @@ public class HeatPumpService {
                 tenths(f, "target_cwu_temp"));
         var setpoints = new Setpoints(whole(f, "setpoint_co_economy"), whole(f, "setpoint_co_comfort"),
                 whole(f, "setpoint_cwu_economy"), whole(f, "setpoint_cwu_comfort"));
-        return new HeatPumpView(time, stale, state(f), whole(f, "output_compressor"), heaterOn(f),
+        return new HeatPumpView(time, stale, state(f), whole(f, "output_compressor"),
                 on(f, "alarm") || on(f, "alarm_code"), alarmCode, alarmText(alarmCode),
                 new Pumps(on(f, "output_co"), on(f, "output_buffer"), on(f, "output_circulation"),
                         on(f, "output_ground"), on(f, "output_cwu")),
@@ -60,11 +59,6 @@ public class HeatPumpService {
                 targets, setpoints, Periods.of(whole(f, "program"), targets, setpoints));
     }
 
-    /** The heater output, or zb_state 2, which is the CWU heater too. */
-    private static boolean heaterOn(Map<String, Double> f) {
-        return on(f, "output_heater") || Integer.valueOf(HEATER_STATE).equals(whole(f, "zb_state"));
-    }
-
     /** Codes of register 4011 as the vendor app names them; unverified on our device. */
     private static String alarmText(Integer code) {
         if (code == null || code == 0) {

backend/src/main/java/home/backend/domain/HeatPumpSample.java

@@ -3,6 +3,6 @@ package home.backend.domain;
 import java.time.Instant;
 
 /** One poll of the heat pump from InfluxDB; a field the poll did not carry is null. */
-public record HeatPumpSample(Instant t, Double compressor, Double cwu, Double co, Double heater,
+public record HeatPumpSample(Instant t, Double compressor, Double cwu, Double co,
         Double outdoorTemp, Double cwuTemp, Periods periods) {
 }

backend/src/main/java/home/backend/domain/HeatPumpView.java

@@ -6,7 +6,7 @@ import java.time.Instant;
  * What the heat pump does now (F1). Without a reading from the gateway {@code time} and the values are
  * null; {@code stale} is true when the device is down or the reading is older than 2 × 300 s.
  */
-public record HeatPumpView(Instant time, boolean stale, State state, Integer compressorPercent, boolean heaterOn,
+public record HeatPumpView(Instant time, boolean stale, State state, Integer compressorPercent,
         boolean alarm, Integer alarmCode, String alarmText, Pumps pumps, Temperatures temperatures,
         Targets targets, Setpoints setpoints, Periods periods) {
 

backend/src/main/java/home/backend/domain/StatsView.java

@@ -10,10 +10,10 @@ import java.util.List;
 public record StatsView(String range, List<Day> days, Totals totals) {
 
     public record Day(LocalDate date, Double compressorHours, Integer compressorStarts, Double cwuHours,
-            Double coHours, Double heaterHours, Double avgOutdoorTemp, Double minCwuTemp, Double maxCwuTemp) {
+            Double coHours, Double avgOutdoorTemp, Double minCwuTemp, Double maxCwuTemp) {
     }
 
     public record Totals(double compressorHours, int compressorStarts, double cwuHours, double coHours,
-            double heaterHours, Double avgOutdoorTemp, Double minCwuTemp, Double maxCwuTemp) {
+            Double avgOutdoorTemp, Double minCwuTemp, Double maxCwuTemp) {
     }
 }

backend/src/test/java/home/backend/adapters/http/ApiServerTest.java

@@ -121,10 +121,10 @@ class ApiServerTest {
                 throw new IOException("influx down");
             }
             return List.of(
-                    new HeatPumpSample(Instant.parse("2026-10-23T10:00:00Z"), 0.0, 0.0, 0.0, 0.0, 8.0, 44.0, Periods.UNKNOWN),
-                    new HeatPumpSample(Instant.parse("2026-10-23T10:05:00Z"), 100.0, 100.0, 0.0, 0.0, 8.5, 43.0, Periods.UNKNOWN),
-                    new HeatPumpSample(Instant.parse("2026-10-23T10:10:00Z"), 100.0, 0.0, 0.0, 100.0, 9.0, 45.0, Periods.UNKNOWN),
-                    new HeatPumpSample(Instant.parse("2026-10-23T10:15:00Z"), 0.0, 0.0, 0.0, 0.0, 9.0, 46.0, Periods.UNKNOWN));
+                    new HeatPumpSample(Instant.parse("2026-10-23T10:00:00Z"), 0.0, 0.0, 0.0, 8.0, 44.0, Periods.UNKNOWN),
+                    new HeatPumpSample(Instant.parse("2026-10-23T10:05:00Z"), 100.0, 100.0, 0.0, 8.5, 43.0, Periods.UNKNOWN),
+                    new HeatPumpSample(Instant.parse("2026-10-23T10:10:00Z"), 100.0, 0.0, 0.0, 9.0, 45.0, Periods.UNKNOWN),
+                    new HeatPumpSample(Instant.parse("2026-10-23T10:15:00Z"), 0.0, 0.0, 0.0, 9.0, 46.0, Periods.UNKNOWN));
         };
         verdict = Status.APPLIED;
         restoreOutcome = Outcome.RESTORED;
@@ -256,7 +256,7 @@ class ApiServerTest {
                 "co_buffer_temp", 16.9, "cwu_temp", 13.6, "ground_in_temp", 16.0, "ground_out_temp", 14.3,
                 "pump_outlet_temp", 19.7, "outdoor_avg_temp", 4.8, "target_room_temp", 18.0));
         pump.putAll(Map.of("target_co_temp", 31.0, "target_cwu_temp", 8.0, "pump_mode", 0.0,
-                "output_compressor", 0.0, "output_heater", 0.0, "alarm", 0.0,
+                "output_compressor", 0.0, "alarm", 0.0,
                 "setpoint_co_economy", 18.0, "setpoint_co_comfort", 19.0, "setpoint_cwu_economy", 8.0));
         pump.putAll(Map.of("setpoint_cwu_comfort", 45.0, "output_co", 0.0, "output_buffer", 0.0,
                 "output_circulation", 0.0, "output_ground", 0.0, "output_cwu", 0.0, "program", 1.0));
@@ -543,7 +543,7 @@ class ApiServerTest {
             List<HeatPumpSample> polls = new ArrayList<>();
             for (int minute = 20; minute <= 125; minute += 5) {
                 Instant t = Instant.parse("2026-10-23T09:00:00Z").plus(Duration.ofMinutes(minute));
-                polls.add(new HeatPumpSample(t, null, null, null, null, null, null,
+                polls.add(new HeatPumpSample(t, null, null, null, null, null,
                         minute >= 25 && minute <= 60 ? comfort : economy));
             }
             return polls;

backend/src/test/java/home/backend/adapters/influx/InfluxHistoryRepositoryTest.java

@@ -218,16 +218,16 @@ class InfluxHistoryRepositoryTest {
         List<HeatPumpSample> samples = repository(TIMEOUT).samples(FROM, TO);
 
         assertEquals("Dom_Pompa", requests.get(0).get("db"));
-        assertEquals("SELECT output_compressor, output_cwu, output_co, output_heater, outdoor_temp, cwu_temp,"
+        assertEquals("SELECT output_compressor, output_cwu, output_co, outdoor_temp, cwu_temp,"
                 + " program, target_room_temp, target_cwu_temp, setpoint_co_economy, setpoint_co_comfort,"
                 + " setpoint_cwu_economy, setpoint_cwu_comfort"
                 + " FROM \"heat_pump\" WHERE time >= 1792800000000ms AND time < 1792821600000ms",
                 requests.get(0).get("q"));
         assertEquals(3, samples.size());
-        assertEquals(new HeatPumpSample(Instant.ofEpochMilli(1792771500000L), 100.0, 100.0, 0.0, 0.0, 8.5, 43.9,
+        assertEquals(new HeatPumpSample(Instant.ofEpochMilli(1792771500000L), 100.0, 100.0, 0.0, 8.5, 43.9,
                 new Periods(Period.COMFORT, Period.COMFORT, 1, null)), samples.get(1));
         assertEquals(Period.ECONOMY, samples.get(0).periods().cwu());
-        assertEquals(new HeatPumpSample(Instant.ofEpochMilli(1792771800000L), 50.0, 0.0, 100.0, 100.0, null, null, Periods.UNKNOWN),
+        assertEquals(new HeatPumpSample(Instant.ofEpochMilli(1792771800000L), 50.0, 0.0, 100.0, null, null, Periods.UNKNOWN),
                 samples.get(2));
     }
 

backend/src/test/java/home/backend/application/ProgramServiceTest.java

@@ -41,7 +41,7 @@ class ProgramServiceTest {
     }
 
     private static HeatPumpSample poll(String utc, Periods periods) {
-        return new HeatPumpSample(Instant.parse(utc), null, null, null, null, null, null, periods);
+        return new HeatPumpSample(Instant.parse(utc), null, null, null, null, null, periods);
     }
 
     /** CWU economy 8, comfort 43; room economy 18, comfort 19, as on the real controller. */
@@ -67,7 +67,7 @@ class ProgramServiceTest {
         List<HeatPumpSample> samples = new ArrayList<>();
         Instant end = Instant.parse(to + ":00Z");
         for (Instant t = Instant.parse(from + ":00Z"); !t.isAfter(end); t = t.plus(Duration.ofMinutes(POLL_MINUTES))) {
-            samples.add(new HeatPumpSample(t, null, null, null, null, null, null, periods));
+            samples.add(new HeatPumpSample(t, null, null, null, null, null, periods));
         }
         return samples;
     }

backend/src/test/java/home/backend/application/ServicesTest.java

@@ -72,13 +72,6 @@ class ServicesTest {
         assertEquals(State.HEATING_BOTH, heatPump(Map.of("pump_mode", 3.0)).state());
     }
 
-    @Test
-    void heatPumpHeaterIsOnForTheOutputOrForZbState2() throws IOException {
-        assertTrue(heatPump(Map.of("output_heater", 100.0)).heaterOn());
-        assertTrue(heatPump(Map.of("output_heater", 0.0, "zb_state", 2.0)).heaterOn());
-        assertFalse(heatPump(Map.of("output_heater", 0.0, "zb_state", 0.0)).heaterOn());
-    }
-
     @Test
     void heatPumpPeriodsComeFromTargetsAndSetpoints() throws IOException {
         HeatPumpView view = heatPump(Map.of("program", 1.0, "target_cwu_temp", 43.0, "setpoint_cwu_economy", 8.0,
@@ -107,12 +100,11 @@ class ServicesTest {
 
     @Test
     void heatPumpMapsOutputsAlarmAndTime() throws IOException {
-        HeatPumpView view = heatPump(Map.of("output_compressor", 66.0, "output_heater", 100.0,
+        HeatPumpView view = heatPump(Map.of("output_compressor", 66.0,
                 "output_cwu", 100.0, "output_co", 0.0, "alarm", 4.0, "setpoint_cwu_economy", 8.0));
 
         assertEquals(READ, view.time());
         assertEquals(66, view.compressorPercent());
-        assertTrue(view.heaterOn());
         assertTrue(view.alarm());
         assertTrue(view.pumps().cwu());
         assertFalse(view.pumps().co());

backend/src/test/java/home/backend/application/StatsServiceTest.java

@@ -36,7 +36,7 @@ class StatsServiceTest {
     }
 
     private static HeatPumpSample compressor(String time, double stage) {
-        return new HeatPumpSample(Instant.parse(time), stage, 0.0, 0.0, 0.0, null, null, Periods.UNKNOWN);
+        return new HeatPumpSample(Instant.parse(time), stage, 0.0, 0.0, null, null, Periods.UNKNOWN);
     }
 
     private static Day day(StatsView view, String date) {
@@ -159,15 +159,14 @@ class StatsServiceTest {
     @Test
     void sumsEachOutputSeparately() throws IOException {
         StatsView view = stats("7d", NOW,
-                new HeatPumpSample(Instant.parse("2026-10-23T10:00:00Z"), 100.0, 100.0, 0.0, 0.0, 10.0, 40.0, Periods.UNKNOWN),
-                new HeatPumpSample(Instant.parse("2026-10-23T10:05:00Z"), 100.0, 0.0, 100.0, 100.0, 12.0, 38.0, Periods.UNKNOWN),
-                new HeatPumpSample(Instant.parse("2026-10-23T10:10:00Z"), 0.0, 0.0, 0.0, 0.0, null, null, Periods.UNKNOWN));
+                new HeatPumpSample(Instant.parse("2026-10-23T10:00:00Z"), 100.0, 100.0, 0.0, 10.0, 40.0, Periods.UNKNOWN),
+                new HeatPumpSample(Instant.parse("2026-10-23T10:05:00Z"), 100.0, 0.0, 100.0, 12.0, 38.0, Periods.UNKNOWN),
+                new HeatPumpSample(Instant.parse("2026-10-23T10:10:00Z"), 0.0, 0.0, 0.0, null, null, Periods.UNKNOWN));
 
         Day d = day(view, "2026-10-23");
         assertEquals(0.17, d.compressorHours());
         assertEquals(0.08, d.cwuHours());
         assertEquals(0.08, d.coHours());
-        assertEquals(0.08, d.heaterHours());
         assertEquals(11.0, d.avgOutdoorTemp());
         assertEquals(38.0, d.minCwuTemp());
         assertEquals(40.0, d.maxCwuTemp());
@@ -176,13 +175,12 @@ class StatsServiceTest {
     @Test
     void totalsCoverTheWholeRangeWithTheTemperatureOfAllPolls() throws IOException {
         StatsView view = stats("7d", NOW,
-                new HeatPumpSample(Instant.parse("2026-10-22T10:00:00Z"), 100.0, 0.0, 0.0, 0.0, 10.0, 30.0, Periods.UNKNOWN),
-                new HeatPumpSample(Instant.parse("2026-10-22T10:05:00Z"), 0.0, 0.0, 0.0, 0.0, 10.0, 31.0, Periods.UNKNOWN),
-                new HeatPumpSample(Instant.parse("2026-10-23T10:00:00Z"), 100.0, 0.0, 0.0, 100.0, 4.0, 45.0, Periods.UNKNOWN),
-                new HeatPumpSample(Instant.parse("2026-10-23T10:05:00Z"), 0.0, 0.0, 0.0, 0.0, 4.0, 44.0, Periods.UNKNOWN));
+                new HeatPumpSample(Instant.parse("2026-10-22T10:00:00Z"), 100.0, 0.0, 0.0, 10.0, 30.0, Periods.UNKNOWN),
+                new HeatPumpSample(Instant.parse("2026-10-22T10:05:00Z"), 0.0, 0.0, 0.0, 10.0, 31.0, Periods.UNKNOWN),
+                new HeatPumpSample(Instant.parse("2026-10-23T10:00:00Z"), 100.0, 0.0, 0.0, 4.0, 45.0, Periods.UNKNOWN),
+                new HeatPumpSample(Instant.parse("2026-10-23T10:05:00Z"), 0.0, 0.0, 0.0, 4.0, 44.0, Periods.UNKNOWN));
 
         assertEquals(0.17, view.totals().compressorHours());
-        assertEquals(0.08, view.totals().heaterHours());
         assertEquals(7.0, view.totals().avgOutdoorTemp());
         assertEquals(30.0, view.totals().minCwuTemp());
         assertEquals(45.0, view.totals().maxCwuTemp());
@@ -191,7 +189,7 @@ class StatsServiceTest {
     @Test
     void aMissingFieldCountsAsOffAndUnknownStateIsNoStart() throws IOException {
         StatsView view = stats("7d", NOW,
-                new HeatPumpSample(Instant.parse("2026-10-23T10:00:00Z"), null, null, null, null, null, null, Periods.UNKNOWN),
+                new HeatPumpSample(Instant.parse("2026-10-23T10:00:00Z"), null, null, null, null, null, Periods.UNKNOWN),
                 compressor("2026-10-23T10:05:00Z", 100));
 
         assertEquals(0, day(view, "2026-10-23").compressorStarts());

backend/src/test/resources/api/heat-pump-unread.json

@@ -3,7 +3,6 @@
   "stale": true,
   "state": null,
   "compressorPercent": null,
-  "heaterOn": false,
   "alarm": false,
   "alarmCode": null,
   "alarmText": null,

backend/src/test/resources/api/heat-pump.json

@@ -3,7 +3,6 @@
   "stale": false,
   "state": "IDLE",
   "compressorPercent": 0,
-  "heaterOn": false,
   "alarm": false,
   "alarmCode": null,
   "alarmText": null,

backend/src/test/resources/api/stats.json

@@ -7,7 +7,6 @@
       "compressorStarts": null,
       "cwuHours": null,
       "coHours": null,
-      "heaterHours": null,
       "avgOutdoorTemp": null,
       "minCwuTemp": null,
       "maxCwuTemp": null
@@ -18,7 +17,6 @@
       "compressorStarts": null,
       "cwuHours": null,
       "coHours": null,
-      "heaterHours": null,
       "avgOutdoorTemp": null,
       "minCwuTemp": null,
       "maxCwuTemp": null
@@ -29,7 +27,6 @@
       "compressorStarts": null,
       "cwuHours": null,
       "coHours": null,
-      "heaterHours": null,
       "avgOutdoorTemp": null,
       "minCwuTemp": null,
       "maxCwuTemp": null
@@ -40,7 +37,6 @@
       "compressorStarts": null,
       "cwuHours": null,
       "coHours": null,
-      "heaterHours": null,
       "avgOutdoorTemp": null,
       "minCwuTemp": null,
       "maxCwuTemp": null
@@ -51,7 +47,6 @@
       "compressorStarts": null,
       "cwuHours": null,
       "coHours": null,
-      "heaterHours": null,
       "avgOutdoorTemp": null,
       "minCwuTemp": null,
       "maxCwuTemp": null
@@ -62,7 +57,6 @@
       "compressorStarts": 1,
       "cwuHours": 0.08,
       "coHours": 0.0,
-      "heaterHours": 0.08,
       "avgOutdoorTemp": 8.6,
       "minCwuTemp": 43.0,
       "maxCwuTemp": 46.0
@@ -73,7 +67,6 @@
       "compressorStarts": null,
       "cwuHours": null,
       "coHours": null,
-      "heaterHours": null,
       "avgOutdoorTemp": null,
       "minCwuTemp": null,
       "maxCwuTemp": null
@@ -84,7 +77,6 @@
     "compressorStarts": 1,
     "cwuHours": 0.08,
     "coHours": 0.0,
-    "heaterHours": 0.08,
     "avgOutdoorTemp": 8.6,
     "minCwuTemp": 43.0,
     "maxCwuTemp": 46.0

backend/src/test/resources/influx/influx-query-heat-pump.json

@@ -1 +1 @@
-{"results":[{"statement_id":0,"series":[{"name":"heat_pump","columns":["time","output_compressor","output_cwu","output_co","output_heater","outdoor_temp","cwu_temp","program","target_room_temp","target_cwu_temp","setpoint_co_economy","setpoint_co_comfort","setpoint_cwu_economy","setpoint_cwu_comfort"],"values":[[1792771200000,0,0,0,0,8.5,44.2,1,18.0,8.0,18,19,8,43],[1792771500000,100,100,0,0,8.5,43.9,1,19.0,43.0,18,19,8,43],[1792771800000,50,0,100,100,null,null,null,null,null,null,null,null,null]]}]}]}
+{"results":[{"statement_id":0,"series":[{"name":"heat_pump","columns":["time","output_compressor","output_cwu","output_co","outdoor_temp","cwu_temp","program","target_room_temp","target_cwu_temp","setpoint_co_economy","setpoint_co_comfort","setpoint_cwu_economy","setpoint_cwu_comfort"],"values":[[1792771200000,0,0,0,8.5,44.2,1,18.0,8.0,18,19,8,43],[1792771500000,100,100,0,8.5,43.9,1,19.0,43.0,18,19,8,43],[1792771800000,50,0,100,null,null,null,null,null,null,null,null,null]]}]}]}

docs/frisko/rx910-se21.md

@@ -27,7 +27,7 @@ unless marked otherwise.
 | Outputs | 4112 CO, 4113 buffer, 4114 compressor (0/33/66/100), 4115 heater signal (heater not connected), 4116 circulation, 4117 ground, 4118 CWU | 0 or 100 |
 | Setpoints (F3) | 4131/4132 CO economy/comfort (5–35), 4143/4144 CWU economy/comfort (5–70) | whole °C |
 | Protection | 4158 TmaxPc = 52 °C, 4149 TmaxCWU = 55, 4148 HistCWU = 5, 4146 PriorCWU = 1, 4147 heater signal delay = 20 | read 2026-10-23 |
-| Compressor | 4166 zwlZSt(II) = 20 min (stage 2 delay, matches history), 4165 zwlZSt(..) = 10 (likely stage 3, never seen), 4162 t_wylSpr = 5 min (minimum off, matches the 18:20 stop / 18:25 restart), 4160 t_zwlZalSpr = 20, 4161 t_zwlWylPdz = 20, 4163 t_minSpr = 160, 4164 t_maxSpr = 230 (units unknown); 4157 TminDz = −3, 4159 ∆TmaxDz = 10 | FC3 read 2026-10-25 |
+| Compressor | 4166 zwlZSt(II) = 30 min (stage 2 delay; was 20, matching history, until the owner-approved one-time write of 2026-10-25, read back 30), 4165 zwlZSt(..) = 10 (likely stage 3, never seen), 4162 t_wylSpr = 5 min (minimum off, matches the 18:20 stop / 18:25 restart), 4160 t_zwlZalSpr = 20, 4161 t_zwlWylPdz = 20, 4163 t_minSpr = 160, 4164 t_maxSpr = 230 (units unknown); 4157 TminDz = −3, 4159 ∆TmaxDz = 10 | FC3 read 2026-10-25, 4166 written and read back 2026-10-25 |
 | CWU extras | 4150 TpodbCWU = 5, 4151 t_podbCWU = 15, disinfection 4152–4154 = 7 days / 60 °C / 60 min (off: 4145 = 0), 4155/4156 t_zal/wylCCW = 2/2; 4246, 4247 read garbage (not on this firmware) | FC3 read 2026-10-25 |
 
 Unknown: 4119 `WyCHL` reads −14308. Vendor-app findings, all unverified: [app-knowledge.md](app-knowledge.md).

docs/spec.md

@@ -74,11 +74,10 @@ Layers in both apps, dependencies point inwards only:
 Functional:
 
 - F1 Live state of the heat pump: idle / heating CWU / heating CO, compressor stage, pumps,
-  heater, alarm, current targets and temperatures; the BME280 reading (temperature, humidity,
+  alarm, current targets and temperatures; the BME280 reading (temperature, humidity,
   pressure) of the living room. An "Odśwież" button asks for one extra poll of each device, at most once
-  a minute per device (the MK01 takes one client). It also shows the period (comfort or economy) of CWU and room,
-  and the controller's heater signal (the heater is not connected).
-- F2 History for the last 7 days, and per-day heat pump statistics for 7 or 30 days (compressor, CWU, CO and heater hours,
+  a minute per device (the MK01 takes one client). It also shows the period (comfort or economy) of CWU and room.
+- F2 History for the last 7 days, and per-day heat pump statistics for 7 or 30 days (compressor, CWU and CO hours,
   starts "at least" because polls are 5 minutes apart).
 - F3 Change four setpoints: economy and comfort temperature of CWU (4143, 4144) and CO
   (4131, 4132). Any value within limits, or one tap on a named preset. Limits and presets live in

frontend/src/Details.tsx

@@ -1,5 +1,5 @@
 import type { ReactNode } from "react";
-import { celsius, degrees, HEATER_SIGNAL, number, periodText } from "./format";
+import { celsius, degrees, number, periodText } from "./format";
 import type { HeatPump, PiSensor } from "./types";
 import { Card, Row } from "./ui";
 
@@ -37,7 +37,6 @@ export function TemperatureDetails({ hp, pi }: { hp: HeatPump; pi: PiSensor | un
         <Row label="Bufor CO" value={celsius(t.coBuffer)} />
         <Row label="Bufor CO, cel" value={celsius(targets.co)} />
         <Row label="Wyjście pompy" value={celsius(t.pumpOutlet)} />
-        {hp.heaterOn && <Row label="Grzałka" value={HEATER_SIGNAL} />}
       </Group>
       <Group title="Dolne źródło">
         <Row label="Do pompy" value={celsius(t.groundIn)} />

frontend/src/History.test.tsx

@@ -50,15 +50,11 @@ describe("Historia views", () => {
 });
 
 describe("Statystyki", () => {
-  it("shows the totals and the starts as a minimum, with the heater signal neutral", async () => {
+  it("shows the totals and the starts as a minimum", async () => {
     await open();
 
     expect(await screen.findByText("Załączenia sprężarki, co najmniej")).toBeInTheDocument();
     expect(screen.getAllByText("0,2 h").length).toBeGreaterThan(0);
-    const tile = screen.getByText("Sygnał grzałki (niepodłączona)").closest("div")!;
-    expect(tile).toHaveTextContent("0,1 h");
-    expect(tile.className).not.toMatch(/alarm|run/);
-    expect(screen.queryByText("Prąd z grzałki jest drogi")).toBeNull();
     expect(screen.queryByRole("status")).toBeNull();
   });
 

frontend/src/Overview.test.tsx

@@ -174,24 +174,4 @@ describe("Overview", () => {
 
     expect((await screen.findByRole("region", { name: "Teraz" })).children[0]).toHaveTextContent(/^Ciepła woda13,6 °Ccel 8,0 °C$/);
   });
-
-  it("shows the heater as the controller's signal, without a warning or a power figure", async () => {
-    serveHeatPump({ ...fresh(example<HeatPump>("heat-pump")), heaterOn: true });
-    const Overview = await overview();
-    render(<Overview />);
-
-    expect(await screen.findByText("sprężarka, grzałka: sygnał sterownika (niepodłączona)")).toBeInTheDocument();
-    expect(screen.getByText("Grzałka").closest("section")).toHaveTextContent("sygnał sterownika (niepodłączona)");
-    expect(screen.queryByText(/Grzałka elektryczna/)).toBeNull();
-    expect(screen.queryByText(/0,9 kW/)).toBeNull();
-  });
-
-  it("says nothing about the heater while its output is off", async () => {
-    serveHeatPump(fresh(example("heat-pump")));
-    const Overview = await overview();
-    render(<Overview />);
-
-    expect(await screen.findByText("sprężarka")).toBeInTheDocument();
-    expect(screen.queryByText("Grzałka")).toBeNull();
-  });
 });

frontend/src/Overview.tsx

@@ -1,5 +1,5 @@
 import type { ReactNode } from "react";
-import { celsius, HEATER_SIGNAL, hour, longDate, number, percent, periodText, power } from "./format";
+import { celsius, hour, longDate, number, percent, periodText, power } from "./format";
 import { Icon, type IconName } from "./icons";
 import { flowing } from "./flow";
 import { usePoll } from "./poll";
@@ -108,7 +108,7 @@ function Tile({ icon, title, detail, value, status }: {
 function DeviceTiles({ hp }: { hp: HeatPump }) {
   return (
     <section aria-label="Stan urządzeń" className="grid gap-3 sm:grid-cols-2 sm:gap-4">
-      <Tile icon="fan" title="Pompa ciepła" detail={hp.heaterOn ? `sprężarka, grzałka: ${HEATER_SIGNAL}` : "sprężarka"}
+      <Tile icon="fan" title="Pompa ciepła" detail="sprężarka"
         value={hp.compressorPercent == null ? "—" : `${hp.compressorPercent} %`}
         status={running(hp.compressorPercent == null ? null : hp.compressorPercent > 0)} />
       <Tile icon="tank" title="Zbiornik CWU" detail={`cyrkulacja ${onOff(hp.pumps.circulation, "pracuje", "stoi")}`}

frontend/src/Stats.tsx

@@ -28,9 +28,9 @@ export function takting(days: StatsDay[]) {
   return days.some((d) => (d.compressorStarts ?? 0) > TAKTING_STARTS_PER_DAY);
 }
 
-function Tile({ label, value, wide = false }: { label: string; value: string; wide?: boolean }) {
+function Tile({ label, value }: { label: string; value: string }) {
   return (
-    <div className={`rounded-xl border border-edge bg-page p-3 ${wide ? "col-span-2 lg:col-span-1" : ""}`}>
+    <div className="rounded-xl border border-edge bg-page p-3">
       <p className="text-2xl font-bold tabular-nums">{value}</p>
       <p className="text-sm text-soft">{label}</p>
     </div>
@@ -40,12 +40,11 @@ function Tile({ label, value, wide = false }: { label: string; value: string; wi
 function Totals({ stats }: { stats: StatsData }) {
   const t = stats.totals;
   return (
-    <div className="mb-4 grid grid-cols-2 gap-3 lg:grid-cols-5">
+    <div className="mb-4 grid grid-cols-2 gap-3 lg:grid-cols-4">
       <Tile label="Sprężarka" value={hours(t.compressorHours)} />
       <Tile label="Załączenia sprężarki, co najmniej" value={number(t.compressorStarts)} />
       <Tile label="Ciepła woda (CWU)" value={hours(t.cwuHours)} />
       <Tile label="Ogrzewanie (CO)" value={hours(t.coHours)} />
-      <Tile label="Sygnał grzałki (niepodłączona)" value={hours(t.heaterHours)} wide />
     </div>
   );
 }

frontend/src/format.ts

@@ -104,6 +104,3 @@ export function periodText(period: Period, programText: string | null): string |
   if (period === "override") return programText ? `program: ${programText}` : "program inny niż tygodniowy";
   return null;
 }
-
-/** The electric heater is not wired (owner, 2026-10-25): output 4115 is only the controller's signal. */
-export const HEATER_SIGNAL = "sygnał sterownika (niepodłączona)";

frontend/src/types.ts

@@ -16,7 +16,6 @@ export interface HeatPump {
   stale: boolean;
   state: PumpState | null;
   compressorPercent: number | null;
-  heaterOn: boolean | null;
   alarm: boolean;
   alarmCode: number | null;
   alarmText: string | null;
@@ -260,7 +259,6 @@ export interface StatsDay {
   compressorStarts: number | null;
   cwuHours: number | null;
   coHours: number | null;
-  heaterHours: number | null;
   avgOutdoorTemp: number | null;
   minCwuTemp: number | null;
   maxCwuTemp: number | null;
@@ -271,7 +269,6 @@ export interface StatsTotals {
   compressorStarts: number;
   cwuHours: number;
   coHours: number;
-  heaterHours: number;
   avgOutdoorTemp: number | null;
   minCwuTemp: number | null;
   maxCwuTemp: number | null;