8
Faults and malfunctions
Installation and maintenance instructions
48
Daikin Altherma EHS(X/H)
Daikin Altherma integrated solar unit
008.1444099_00 – 07/2018 – EN
Code
Component/Designation
Error
Possible fault rectification
E9030 Temperature sensor R10T
on inverter circuit board in
the heat pump outdoor unit
(only in 1116 kW system)
Electrically defective
Overtemperature in the heat pump outdoor unit.
▪ Very high outdoor temperature.
▪ Insufficient cooling of the inverter board.
▪ Air intake dirty/blocked.
▪ Inverter circuit board in the heat pump outdoor
unit defective.
▪ Temperature sensor on inverter circuit board de-
fective, plug connection X111A not correct.
▪ Check, eliminate cause, replace.
▪ If necessary, contact a service technician.
E9031 Electrical components over-
voltage fault
If the fault occurs <15x, the functional safety of the
Daikin Altherma EHS(X/H) is still guaranteed.
▪ Sporadic message during continuous self-monit-
oring by the device.
▪ No further measures are required.
If the fault occurs 15x, it is locked and may have the
following causes:
▪ Current mains overvoltage.
▪ Refrigerant compressor blocked or defective.
▪ Inverter circuit board in the heat pump outdoor
unit defective.
▪ Wiring, poor contact.
▪ Service valves in the heat pump outdoor unit not
open.
▪ Check, eliminate cause, replace.
▪ If necessary, contact a service technician.
E9032 Electrical components
▪ Refrigerant compressor defective.
▪ Inverter circuit board in the heat pump outdoor
unit defective.
▪ Check, replace.
▪ If necessary, contact a service technician.
E9033
▪ Refrigerant compressor blocked or defective.
▪ Pressure difference between high and low pres-
sure side too high before starting refrigerant com-
pressor.
▪ Service valves in the heat pump outdoor unit not
open.
▪ Check, eliminate cause, replace.
▪ If necessary, contact a service technician.
E9034
Communication error - internal communication in
the heat pump outdoor unit lost.
▪ Electromagnetic influences.
▪ Perform reset.
▪ Main circuit board in the heat pump outdoor unit
defective.
▪ Inverter circuit board in the heat pump outdoor
unit defective.
▪ Fan motor defective.
▪ Wiring, poor contact.
▪ Check, eliminate cause, replace.
▪ If necessary, contact a service technician.
E9035 Inverter circuit board in the
heat pump outdoor unit
AG circuit board defective
No supply voltage from the mains connection.
▪ Inverter circuit board in the heat pump outdoor
unit defective.
▪ Check, eliminate cause, replace.
▪ If necessary, contact a service technician.
