Daikin Altherma 3 H HT ECH2 O Referenzhandbuch Für Den Monteur Seite 45

Error Code Component/Designation Error
number
9047 E8-00 Software
9048 EA-00 4-way distribution valve,
outdoor unit
9049 F6-00 Temperature sensor on
the evaporator
Daikin Altherma ETS(X/H)(B)-D
Heat pump (indoor unit) with integrated heat accumulator
008.1447299_00 – 06/2019 – EN
Possible error rectification
Overvoltage System detects an overcurrent of > 20 A to the compressor for
> 2.5 seconds 16x in 5 min
▪ Check the compressor.
▪ Check the compressor's connection and wiring.
▪ Check the operation of the expansion valve (fluid return flow).
▪ Check the refrigerant filling capacity and check for leaks.
▪ Check the power transistor.
▪ Check the outer inverter conductor plate.
▪ Check that the current flow LED flashes at regular intervals.
▪ Check that the correct replacement part has been installed.
▪ Check that the outer main conductor plate is receiving a power
supply.
▪ Check that the power supply meets the regulations. Check for
frequency fluctuations.
4-way valve The following condition occurs for 10 min after operation for 5 min:
Heating: temperature of the condenser negative outlet water tem-
perature < -10 °C
▪ Check the thermistor for the outlet water in the heat exchanger.
▪ Check the thermistor for the refrigerant fluid side.
▪ Check that the current flow LED flashes at regular intervals.
▪ Check that the correct replacement part has been installed.
▪ Check that the outer main conductor plate is receiving a power
supply.
▪ Check the 4-way distribution valve coil/wiring harness.
▪ Check the 4-way distribution valve body.
▪ Check for insufficient refrigerant. Perform a leak test.
▪ Check the quality of the refrigerant.
▪ Check the shut-off valves.
▪ Check that the hydro printed circuit board is being supplied with
voltage.
Cooling high pressure The temperature measured by the temperature sensor on the fin
heat exchanger exceeds 60 °C
▪ Check that the installation room meets the regulations.
▪ Check the fan.
▪ Check the fan motor's connection and wiring.
▪ Check the expansion valve.
▪ Check the outer inverter conductor plate.
▪ Check that the current flow LED flashes at regular intervals.
▪ Check that the correct replacement part has been installed.
▪ Check that the outer main conductor plate is receiving a power
supply.
▪ Check the shut-off valves.
▪ Check the heat exchanger.
▪ Check the temperature sensor on the fin heat exchanger.
▪ Check the quality of the refrigerant.
7 Faults and malfunctions
Installer reference guide
45