Daikin Altherma 3 H HT ECH2 O Referenzhandbuch Für Den Monteur Seite 41

Error Code Component/Designation Error
number
9007 A1 Circuit board A1P
9008 A5 Temperature sensor (refri-
gerant fluid side) t
door unit
9009 AA Optional: STB backup
heater (EKBUxx)
9010 AC Jumper on A1P circuit
board
9011 C0 FLS flow sensor
9012 C4 Refrigerant temperature
sensor
9013 E1 Heat pump outdoor unit
main circuit board, outdoor
unit
9014 E3 High-pressure switch
S1PH in the refrigerant
system, outdoor unit
9015 E4 Pressure sensor S1NPH
in the heat pump outdoor
unit
9016 E5 Electronic overload pro-
tection in the refrigerant
compressor, outdoor unit
Daikin Altherma ETS(X/H)(B)-D
Heat pump (indoor unit) with integrated heat accumulator
008.1447299_00 – 06/2019 – EN
IG circuit board defective
Refrigerant temperature
, out- outside the valid range
L2
STB fault
STB fault
Flow sensor error
Refrigerant temperature
outside the valid range
AG circuit board defective ▪ Main circuit board in the heat pump outdoor unit defective.
PRefrigerant high
PRefrigerant low
Compressor load protec-
tion
7 Faults and malfunctions
Possible error rectification
Communication between the heat pump outdoor unit and heat
pump indoor unit lost.
▪ Electromagnetic influences.
▪ Perform reset.
▪ Printed circuit board A1P defective.
▪ Replace A1P printed circuit board.
No heat consumption at the plate heat exchanger.
▪ Check the flow rate.
▪ If the flow rate is OK, replace the refrigerant temperature sensor.
Thermal contactor (STB) in the backup heater (EKBUxx) has
triggered.
▪ Check and unlock the position of the STB.
Jumper missing on the "X21A" connection socket of the A1P circuit
board.
▪ Install the jumper.
FLS flow sensor defective.
▪ Replace the FLS flow sensor.
Measured value outside the permissible value range. Sensor or
connecting cable defective.
▪ Check, replace.
▪ Fan motor defective.
▪ Check, replace.
Pressure in refrigerant system is too high.
▪ High-pressure switch S1PH or fan motor defective.
▪ Check, replace.
▪ Poor wiring contact.
▪ Flow rate in the heating system too low.
▪ Filled refrigerant quantity too high.
▪ Check, replace.
▪ Service valves in the heat pump outdoor unit not open.
▪ Open the service valves.
Pressure in refrigerant system too low.
▪ Refrigerant quantity too low.
▪ Check, eliminate cause, top up refrigerant.
▪ Pressure sensor S1NPH in the heat pump outdoor unit defect-
ive.
▪ Temperature sensor of fin heat exchanger R4T in the heat pump
outdoor unit defective.
▪ Solenoid valve in the heat pump outdoor unit not opening.
▪ Main circuit board in the heat pump outdoor unit defective.
▪ Check, replace.
Refrigerant compressor overload protection has triggered. Pres-
sure difference in the refrigerant circuit between high and low pres-
sure side too high (> 26 bar).
▪ Refrigerant compressor defective.
▪ Inverter circuit board in the heat pump outdoor unit defective.
▪ Refrigerant compressor/inverter circuit board wiring, poor con-
tact.
▪ Filled refrigerant quantity too high.
▪ Check, replace.
▪ Service valves in the heat pump outdoor unit not open.
▪ Open the service valves.
Installer reference guide
41