Itho Daalderop Warmtepomp storing: codes, oorzaken en onderdelen

Alle 125 storingscodes van Itho Daalderop warmtepompen, plus de klachten die géén code geven. Typ je code of kies je klacht.

Kort antwoord

Een storing op een Itho Daalderop warmtepomp betekent meestal dat het toestel is vergrendeld of een foutcode meldt. Noteer de code op het display en zoek hem hieronder op: per code vind je de betekenis, controles die je veilig zelf kunt doen en onderdelen die vaak gecontroleerd of vervangen worden. Vaak gezocht: A1 20 (the water pressure of the heating system…), Knippert rood (under-/overvoltage), A3 2 (no RF communication between a room thermostat…). Geen code? Controleer de stroom, de instellingen en de filters en reset één keer. Keert de storing terug, bel dan een erkend installateur.

Meest opgezochte Itho Daalderop-storingen

Dit zijn de codes waar bezoekers van deze site het vaakst op zoeken.

A1 20The water pressure of the heating system…Flashing redUnder-/overvoltage. Pump module temperature too high.A3 2No RF communication between a room thermostat…A1 26The compressor current consumption is too high.A1 1Temperature is outside the normal operating range…A1 10Temperature is outside the normal operating range…A3 3No communication between the main controller and…A0 3Communication with the heat pump has been…

Bekijk de 25 meest gezochte storingscodes van 2026, met de cijfers erachter →

Itho Daalderop warmtepomp storing zonder code op het display

Niet elke storing geeft een code. Dit zijn de klachten die wij het vaakst tegenkomen bij Itho Daalderop, met wat je zelf kunt nagaan voordat je iemand laat komen.

Warmtepomp maakt geen warmte meer

Kijk of de installatie voldoende druk heeft en of er een melding op het display of in de app staat. Na een stroomstoring starten sommige units in een veiligheidsstand op en moeten ze handmatig worden vrijgegeven. Bekijk de bijbehorende onderdelen → Lees ook: warmtepomp bevriest of ontdooit constant →

Buitenunit bevriest of ontdooit constant

Een laagje ijs bij vorst is normaal; de unit ontdooit zichzelf periodiek. Blijft het ijs staan of ontdooit hij om de paar minuten, dan is de luchtstroom belemmerd of klopt er iets niet in de ontdooiregeling. Bekijk de bijbehorende onderdelen → Lees ook: warmtepomp bevriest of ontdooit constant →

Te weinig of te koud tapwater

Controleer de ingestelde tapwatertemperatuur en of het elektrische element is vrijgegeven. Een sterk teruggelopen tapcapaciteit wijst vaak op een defecte boilersensor of een versleten anode in het vat. Bekijk de bijbehorende onderdelen → Lees ook: de anode vervangen voordat het vat gaat →

Lawaai of trillingen

Een duidelijk zwaarder geluid dan normaal komt meestal van de ventilator of van trillingen die via de leidingen doorslaan. Controleer of de unit vrij staat en of de trillingsdempers heel zijn. Bekijk de bijbehorende onderdelen → Lees ook: geluid en ijsvorming bij de buitenunit →

Alle 125 Itho Daalderop warmtepomp storingscodes

Code	Cause
A0 3	Communication with the heat pump has been interrupted.
A1 1	Temperature is outside the normal operating range or the sensor has an open circuit or short circuit.
A1 10	Temperature is outside the normal operating range or the sensor has an open circuit or short circuit.
A1 11	Temperature is outside the normal operating range or the sensor has an open circuit or short circuit.
A1 12	Heating pressure sensor is not functioning properly or is defective.
A1 13	Current measuring coil not functioning properly or is faulty.
A1 14	Current measuring coil not functioning properly or is faulty.
A1 15	Source flow sensor is not functioning properly or is defective.
A1 16	An automatic function or setting has been changed to manual operation.
A1 17	The pressure switch (high pressure switch) has been activated.
A1 18	The pressure switch (high pressure switch) is not functioning properly or is defective.
A1 19	The water pressure of the heating system is too low.
A1 2	Temperature is outside the normal operating range or the sensor has an open circuit or short circuit.
A1 20	The water pressure of the heating system is too low.
A1 21	The compressor starting current is too high. The compressor temperature protection is not functioning properly or is faulty.
A1 21	The compressor starting current is too high.
A1 21	The compressor temperature protection is not functioning properly or is defective.
A1 22	The phase sequence in the wall socket is not clockwise on the heat pump.
A1 23	There is no clockwise rotating field on the incoming 3-phase supply to the heat pump.
A1 24	The compressor current consumption is too low.
A1 25	The electric heating element current consumption is too low.
A1 26	The compressor current consumption is too high.
A1 27	The electric heating element current consumption is too high.
A1 28	The source return temperature (T8) is too low.
A1 29	The source flow temperature (T9) is too low.
A1 3	Temperature is outside the normal operating range or the sensor has an open circuit or short circuit.
A1 30	The liquid temperature (T7) is too high.
A1 31	The discharge gas temperature (T6) is too high.
A1 32	The injection temperature (T4) is too low.
A1 33	Discharge gas temperature too high in relation to the liquid temperature and the expansion valve is fully open.
A1 34	The heating flow temperature (T10) is too high.
A1 34	The heating flow temperature (T10) is too high.
A1 36	Thermostat communication fault.
A1 37	Compressor current consumption without control signal.
A1 38	The element relay is stuck.
A1 4	Temperature is outside the normal operating range or the sensor has an open circuit or short circuit.
A1 42	Temperature sensors T8 (source return) and T9 (source flow) are not functioning properly or are defective.
A1 43	An unsuitable thermostat is connected.
A1 5	Temperature is outside the normal operating range or the sensor has an open circuit or short circuit.
A1 6	Temperature is outside the normal operating range or the sensor has an open circuit or short circuit.
A1 7	Temperature is outside the normal operating range or the sensor has an open circuit or short circuit.
A1 8	Temperature is outside the normal operating range or the sensor has an open circuit or short circuit.
A1 9	Temperature is outside the normal operating range or the sensor has an open circuit or short circuit.
A3 1	No wireless communication between the main thermostat and the controller for too long.
A3 10	The temperature sensor of the main thermostat is defective.
A3 11	The temperature sensor of a room thermostat is defective.
A3 13	The controller is in manual mode.
A3 2	No RF communication between a room thermostat and the controller for too long.
A3 3	No communication between the main controller and sub-controller 1 for too long.
A3 4	No communication between the main controller and sub-controller 2 for too long.
A3 5	Configuration not completed properly.
A3 6	A valve actuator does not respond.
A3 8	The batteries of a room thermostat must be replaced.
A3 9	The batteries of the main thermostat must be replaced.
Continu groen	Normal operation
Continu rood	Rotor blocked.
Continu rood	Winding defective.
E01	There is a fault in the communication between the control panel and the indoor unit. This is probably a PCB fault.
E02	There is a fault in the communication between the main control PCB and the module PCB of the outdoor unit.
E03	There is a fault in the current supply to the compressor.
E04	There is a fault in the current supply to the compressor.
E05	There is a fault in the compressor.
E06	There is a fault in the VDC module. The voltage is too high or too low.
E07	There is a fault in the AC voltage.
E08	There is a fault on the EEPROM.
F01	The outdoor temperature sensor of the outdoor unit has a fault.
F02	The evaporator temperature sensor of the outdoor unit has a fault.
F03	The compressor discharge gas temperature sensor has a fault.
F04	The suction gas temperature sensor of the outdoor unit has a fault.
F05	The evaporating pressure sensor has a fault.
F06	The condensing pressure sensor has a fault.
F07	The high/low pressure switch is open while the heat pump is in standby, or 2 minutes after the compressor has been stopped.
F09	The DC fan or fans (in a system with two fans) cannot reach the required speed or there is no feedback signal.
F10	The fan(s) cannot reach the required speed or there is no feedback signal.
F11	The evaporating pressure is too low.
F12	The condensing pressure is too high.
F13	There is a fault in temperature sensor Tr.
F14	There is a fault in temperature sensor Tw.
F15	There is a fault in temperature sensor Tc.
F16	There is a fault in temperature sensor Tuo.
F17	There is a fault in temperature sensor Tui.
F18	There is a fault in temperature sensor Tup.
F21	There is a fault in temperature sensor Tv1.
F22	There is a fault in temperature sensor Tv2.
F25	There is a fault in the communication between the control panel and the PCB of the indoor unit or outdoor unit.
F27	There is a fault on the EEPROM of the indoor unit.
F28	There is a fault on the PWM feedback signal.
F29	There is a fault on mixing valve 1.
F30	There is a fault on mixing valve 2.
Flashing red	Under-/overvoltage. Pump module temperature too high.
Knippert rood/groen	Dry running
Knippert rood/groen	Overload
P01	Evacuation was not carried out correctly during installation and air has entered the refrigerant system.
P01	There is too much refrigerant in the system.
P01	The air flow through the outdoor unit is insufficient.
P01	The input current is too high or too low, or the system is overloaded.
P02	The input current is too high or too low, or the system is overloaded.
P03	Compressor drive fault.
P04	If the compressor runs continuously at low speed for an extended period, this protection is activated to draw the compressor oil back into the compressor
P05	Compressor is switched off because the high/low pressure switch has opened due to abnormally high/low pressure.
P06	Compressor speed drops because abnormally high pressure is detected by the condensing pressure sensor.
P07	When the compressor has been stationary for a long time and the outdoor temperature is low, the compressor crankcase heater is switched on for some time to warm up the compressor before it starts.
P08	Flow temperature too high or flow rate too low or insufficient refrigerant.
P09	Air circulation of the outdoor unit not adequate.
P10	The input voltage of the heat pump is too high or too low.
P11	Compressor is switched off because the outdoor temperature is too high/low.
P12	Compressor is limited as a result of too high/low outdoor temperature.
P14	The compressor speed drops because abnormally low pressure is detected by the condensing pressure sensor
Pump not running	Electrical fuse defective.
Pump not running	Pump has no supply voltage.
Pomp maakt geluiden	Cavitation due to low system pressure
S01	There is a fault in the anti-freeze protection of the indoor unit cooling. The compressor speed is reduced if the exchanger temperature is lower than 2 ℃; the compressor is stopped if the exchanger temperature is lower than -1 ℃; the compressor is restarted if the exchanger temperature is higher than 6 ℃.
S02	The flow rate in the system is lower than permitted. (HP-S 55 minimum 600 l/h, HP-S 95 and HP-S 130 minimum 900 l/h)
S03	The flow switch is not working.
S04	Too much data is lost during communication.
S05	A fault has occurred in the communication between the control panel and the PCB of the indoor unit or the outdoor unit.
S06	The flow temperature during cooling is lower than 5°C. The compressor is stopped if the flow temperature in cooling mode is lower than 5 ℃.
S07	The flow temperature during heating / domestic hot water production is higher than permitted. The compressor is stopped if the flow temperature in heating or hot water mode is higher than 57 ℃.
S08	Defrost process unsuccessful after being initiated three times. Normal operation of the system can only be restored by restarting it.
S09	The flow temperature during heating / DHW production is too low.
S10	The water flow rate is too low.
S11	Frost protection during cooling has been activated.
Uit	Energy saving during standby of the heat pump.
Uit	No power supply.
Uit	LED lighting defective.

Onderdelen voor je Itho Daalderop warmtepomp bestellen

Onderdelen voor Itho Daalderop koop je bij Instalpunt, snel geleverd.

Bekijk Itho Daalderop-onderdelen →

Veelgestelde vragen over Itho Daalderop-storingen

Wat betekent een storing bij een Itho Daalderop warmtepomp?

Het toestel meldt dat het zichzelf heeft uitgeschakeld of niet verder kan. De code op het display wijst naar de oorzaakgroep: ontsteking, waterdruk, een sensor, de ventilator of de communicatie met de thermostaat. In de tabel hierboven staat per code wat Itho Daalderop ermee bedoelt.

Hoe reset ik mijn Itho Daalderop warmtepomp?

De resetknop zit op het bedieningspaneel van je Itho Daalderop warmtepomp; bij de meeste toestellen houd je hem twee tot vijf seconden ingedrukt tot het display reageert. Reset één keer. Komt dezelfde storing meteen terug, dan lost resetten niets op en is er een onderdeel of een instelling die aandacht nodig heeft. Raadpleeg altijd de handleiding van jouw type: de plaats van de knop en de duur verschillen per serie.

Kan ik een Itho Daalderop-storing zelf verhelpen?

Waterdruk bijvullen, ontluchten, filters vervangen en een sifon schoonmaken kun je zelf. Alles achter het gesloten deel van een gastoestel niet: werk aan gasblok, brander, warmtewisselaar en rookgasafvoer mag in Nederland sinds 2023 alleen door een bedrijf met CO-certificering.

Wat kost het verhelpen van een storing?

Dat hangt af van de oorzaak en of er een onderdeel nodig is. Het onderdeel zelf zie je bij ons direct met prijs en levertijd, zodat je vooraf weet waar je aan toe bent. Vraag bij een monteur altijd naar voorrijkosten en uurtarief voordat hij komt.

Waar vind ik het juiste onderdeel voor mijn Itho Daalderop?

Kijk op het typeplaatje voor het exacte type en zoek daarmee in onze catalogus, of zoek direct op het fabrikantnummer van het defecte onderdeel. Bij elk onderdeel staat op welke toestellen het past.