Daikin Altherma EHSX04P50D Installations- Und Wartungsanleitung Seite 48

8 Faults and malfunctions
Code Component/Designation
E9014 High-pressure switch S1PH
in the refrigerant system
E9015 Pressure sensor S1NPH in
the heat pump outdoor unit
E9016 Electronic overload protec-
tion in the refrigerant com-
pressor
E9017 Fan motor in the heat pump
outdoor unit
E9018 Electronic expansion valve Expansion valve
E9019 Storage tank temperature
sensor t
DHW2
E9020 Outlet temperature sensor
(hot gas sensor) R2T on
the heat pump outdoor unit
refrigerant compressor too
high
Installation and maintenance instructions
46
Error
PRefrigerant high
Prefrigerant low
Compressor load protection
Ventilator blocked
Hot water temperature > 85 °C
T high
Evaporator
Possible fault rectification
Pressure in refrigerant system is too high.
▪ High-pressure switch S1PH or fan motor defect-
ive.
▪ 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 out-
door unit defective.
▪ Temperature sensor of fin-cooled 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. Pressure difference in the refrigerant cir-
cuit between high and low pressure side too high
(> 26 bar).
▪ Refrigerant compressor defective.
▪ Inverter circuit board in the heat pump outdoor
unit defective.
▪ Refrigerant compressor/inverter circuit board wir-
ing, poor contact.
▪ Filled refrigerant quantity too high.
▪ Check, replace.
▪ Service valves in the heat pump outdoor unit not
open.
▪ Open the service valves.
▪ A fan in the heat pump outdoor unit is blocked.
▪ Check the fan for dirt or blockages; if neces-
sary, 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 defective, replace.
The storage tank temperature sensor t
a temperature 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.
Daikin Altherma EHS(X/H)
Daikin Altherma integrated solar unit
008.1444099_00 – 07/2018 – EN
delivers
DHW2