13
Large temperature
difference in the
internal circuit
Low heating water flow in the internal
circuit.
Clean the internal circuit filter.
If the problem persists, contact customer
service.
Tank temperature
sensor
Temperature sensor or connection
failure.
Contact customer service.
When the problem is resolved, the error
disappears automatically.
Low pressure sensor
Pressure sensor failure.
Contact customer service.
High pressure sensor
Pressure sensor failure.
Contact customer service.
Exhaust temperature
sensor
Temperature sensor failure.
Contact customer service.
Valve controller failure
Control unit failure.
Contact customer service.
Solar collector sensor
Sensor or connection failure.
Contact customer service.
When the problem is resolved, the error
disappears automatically.
Valve configuration
Incorrect EEV valve configuration.
Contact customer service.
FC not ready
The frequency converter is not ready
for operation. E.g., oil return to the
compressor.
Contact customer service. When the
problem is resolved, the error disappears
automatically.
External alarm
External failure (DI). If it is provided
that the heat pump can be stopped
from an external signal.
Eliminate the external fault signal.
Possible refrigerant
leakage
Possible refrigerant leakage.
Contact customer service.
Blocking of the
internal circuit
circulation pump
(jamming)
Blocking of the internal circuit
circulation pump (jamming).
Clean the intake or supply nozzle of the
internal circuit pump. If the problem
persists, contact customer service.
Electrical failure of the
internal circuit
circulation pump
Electrical failure of the internal circuit
circulation pump.
Contact customer service.
