Daikin Altherma 3 H HT ECH2 O Referenzhandbuch Für Den Monteur Seite 42

7 Faults and malfunctions
Error Code Component/Designation Error
number
9017 E7 Fan motor in the heat
pump outdoor unit
9018 E9 Electronic expansion
valve, outdoor unit
9019 EC Storage tank temperature
sensor t
DHW2
9020 F3 Outlet temperature sensor
(hot gas sensor) R2T on
the heat pump outdoor
unit refrigerant com-
pressor too high
9021 H3 High-pressure switch
S1PH in the heat pump
outdoor unit
9022 H9 Outside temperature
sensor R1T in the heat
pump outdoor unit
9023 HC Storage tank temperature
sensor t
DHW1
9024 J1 Pressure sensor S1NPH
in the heat pump outdoor
unit
9025 J3 Outlet temperature sensor
R2T in the heat pump out-
door unit
9026 J5 Intake temperature sensor
R3T in the heat pump out-
door unit
9027 J6 Temperature sensor of fin
heat exchanger R5T in the
heat pump outdoor unit
9028 J7 Temperature sensor of fin
heat exchanger R4T in the
heat pump outdoor unit
(only in 11–16 kW system)
9029 J8 Fluid side temperature
sensor R6T in the heat
pump outdoor unit
9030 L4 Temperature sensor R10T
on inverter circuit board in
the heat pump outdoor
unit
(only in 11–16 kW system)
Installer reference guide
42
Ventilator blocked
Expansion valve
Hot water temperature
> 85 °C
TEvaporator high
HPS system
Outside temperature
sensor error
Hot water sensor error
or t
DHW2
Pressure sensor
Return flow sensor error
Intake pipe sensor error
Aircoil sensor, defrost
Aircoil sensor, temp
AG cold sensor error
Electrically defective
Possible error rectification
▪ A fan in the heat pump outdoor unit is blocked.
▪ Check the fan for dirt or blockages; if necessary, clean and
free up.
▪ Fan motor defective.
▪ Fan motor wiring, poor contact.
▪ Overvoltage at fan motor.
▪ Fuse in the heat pump outdoor unit defective.
▪ Inverter circuit board in the heat pump outdoor unit defective.
▪ Check, replace.
The electronic expansion valve in the heat pump outdoor unit is de-
fective, replace.
The storage tank temperature sensor t
value > 85 °C.
Sensor or connecting cable defective.
▪ Check, replace.
▪ Outlet temperature sensor R2T on the refrigerant compressor or
connecting cable defective.
▪ Refrigerant compressor defective.
▪ Check, replace.
▪ High-pressure switch S1PH defective.
▪ Main circuit board in the heat pump outdoor unit defective.
▪ Wiring, poor contact.
▪ Check, replace.
Sensor or connecting cable defective.
▪ Check, replace.
Overtemperature in the heat pump outdoor unit.
▪ Very high outdoor temperature.
▪ Insufficient cooling of the inverter board.
▪ Air intake dirty/blocked.
▪ Inverter circuit board in the heat pump outdoor unit defective.
▪ Temperature sensor on inverter circuit board defective, plug con-
nection X111A not correct.
▪ Check, eliminate cause, replace.
▪ If necessary, contact service partner.
Heat pump (indoor unit) with integrated heat accumulator
delivers a temperature
DHW2
Daikin Altherma ETS(X/H)(B)-D
008.1447299_00 – 06/2019 – EN