Daikin Altherma EHS Serie Manual De Instrucciones E Instalación página 146

8 x Errors, malfunctions and messages
Code Malfunction /
Error messages
Display Internal
E9038 U0 Coolant leak
E9039 U2 Under/over voltage
E9041 U4
E9042 U5
Transmission fault Electrical components
E9043 U7
E9044 UA
Error in external
E75 — temperature sen-
sor
Error storage tank
E76 — temperature sen-
sor
E81 —
Communication
fault
E88 —
E91 —
Error return flow
E128 — temperature sen-
sor
Pressure sensor
E129 —
error
Installation and operating instructions
64
Component/Designation
Loss of coolant.
Sensors and parameter
– Coolant quantity too low. See error code E9015 / E4.
settings in the heat pump
– Block or leak in the coolant line.
exterior unit
Mains voltage outside the permitted ragne
– Sporadic errors shortly after a power outage.
– Inverter board in the heat pump exterior unit defective.
Communication between the heat pump exterior equipment and
heat pump interior equipment malfunctioning.
– Cabling or connections, poor contact.
– No heat pump exterior unit connected.
– Circuit board A1P defective.
– Main board in the heat pump exterior unit defective.
Communication between switch board A1P and RoCon BM1 dis-
rupted.
Communication between main board and inverter board dis-
rupted.
– Main board in the heat pump exterior unit defective.
– Inverter board in the heat pump exterior unit defective.
– Cabling, poor contact.
Configuration of switchboard A1P not suitable for the heat pump
exterior unit
Optional external temperature sensor RoCon OT1 defective or
not connected.
External temperature sen-
sor t (RoCon OT1)
AU
Storage temperature sensor t
or not connected.
Storage tank temperature
sensor t
DHW1
Parameter store in EEPROM faulty.
Circuit board RoCon BM1
Parameter store in external flash memory faulty.
Circuit board RoCon BM1
Connected CAN modules Bus ID of a CAN module duplicated, set unique data bus address.
Return flow temperature sensor t
Return flow temperature
nection cable defective.
sensor t
R1
Pressure sensor DS defective.
Pressure sensor DS
Causes and possible error correction
Check, correct cause, refill coolant.
No error correction required.
Check, replace.
If necessary contact Daikin service technician.
Check, replace.
See error code E200.
Check, correct cause, replace.
Replace circuit board A1P.
If necessary contact Daikin service technician.
Check, replace.
If there is no external temperature sensor connected, check
the parameter [Outside Config] configuration.
DHW1
Check, replace.
Check configuration [Storage Config].
Contact a Daikin service technician.
Contact a Daikin service technician.
Check, replace.
Check, replace.
or connection cable defective
in the flow sensor FLS or con-
R1
Daikin Altherma EHS(X/H)
Daikin Altherma integrated solar unit
008.1441399_02 – 01/2021 – EN