Daikin Altherma EHS04P30B Instructions D'installation Et D'utilisation page 143

Code Malfunction /
Error messages
Display Internal
E9014 E3 Coolant over-
E9015 E4 Coolant under-
E9016 E5 Load protec comp
E9017 E7 Fan blocked
E9018 E9 Expansion valve
Hot water temper-
E9019 EC
ature >85 °C
E9020 F3 Evaporator over-
E9021 H3 HPS-System
Daikin Altherma EHS(X/H)
Daikin Altherma integrated solar unit
008.1441399_02 – 01/2021 – EN
8
Component/Designation
Pressure in refrigerant system is too high.
– High pressure switch S1PH or ventilator motor defective.
High pressure switch
– Poor cable contact.
S1PH in the coolant sys-
– Flow in the heating system too low.
tem
– Filled coolant quantity too high.
– Service valve in the heat pump exterior unit not open.
Pressure in the coolant system is too low.
– Coolant quantity too low.
– Pressure sensor S1NPH in the heat pump exterior unit defec-
Pressure sensor S1NPH
in the heat pump exterior
– Temperature sensor lamella heat exchanger R4T in the heat
unit
– Solenoid valve in the heat pump exterior unit not open.
– Main board in the heat pump exterior unit defective.
Coolant compressor overload protection triggered. Pressure dif-
ference between the high and low pressure sides in the coolant
circuit too high (>26 bar).
– Coolant compressor defective.
Electronic overload pro-
– Inverter board in the heat pump exterior unit defective.
tection in the coolant com-
– Coolant compressor / inverter board cabling, poor contact.
pressor
– Filled coolant quantity too high.
– Service valve in the heat pump exterior unit not open.
– A fan in the external heat pump device is blocked.
– Ventilator motor defective.
Ventilator motor in the
– Ventilator motor, poor contact.
heat pump exterior unit
– Overvoltage at the ventilator motor.
– Fuse in the heat pump exterior unit defective.
– Inverter board in the heat pump exterior unit defective.
Electronic expansion The electronic expansion valve in the external heat pump unit is
valve defective, replace.
The storage tank temperature sensor t
ture value >85 °C.
Storage tank temperature
sensor t Sensor or connection cable defective.
DHW2
Discharge temperature
– Discharge temperature sensor R2T at the coolant compres-
sensor (hot gas sensor)
R2T on the coolant com-
– Coolant compressor defective.
pressor of the heat pump
exterior unit too high
– High pressure switch S1PH defective.
High pressure switch
– Main board in the heat pump exterior unit defective.
S1PH in the heat pump
– Cabling, poor contact.
exterior unit
x Errors, malfunctions and messages
Causes and possible error correction
Check, replace.
Check, replace.
Service valve open.
Check, correct cause, refill coolant.
tive.
pump exterior unit defective.
Check, replace.
Check, replace.
Service valve open.
Check ventilator for the effects of contamination or
blockages, if necessary clean and clear blockage.
Check, replace.
Check, replace.
sor or connection cable defective.
Check, replace.
Check, replace.
delivers a tempera-
DHW2
Installation and operating instructions
61