Grundig GHPH-MM08 Manuel D'utilisation page 115

13 Trouble shooting
Fault
Fault name
number
TC error the
final water
E49
temperature
sensor
Solar
E50 temperature
sensor Tso error
The built-in
temperature
E51 sensor Tro of the
wire controller is
faulty
Zone 2
E52 temperature
sensor TZ2 error
Up temperature
E53 sensor TE1 of
buffer tank error
Down
temperature
E54
sensor TE2 of
buffer tank error
outlet water
E56 pressure sensor
PS1error
GAS SENSOR
E57
OFFLINE
GAS SENSOR
E58
FAULT
MODULE
E59
OFFLINE
Heat Pump Monobloc Inverter / User Manual
Failure analysis
Check whether the wiring is wrong, reconnect the cable;
For CASCADE application, there are communication errors between master module and slave
modules, please check whether the wiring is correct.
Diagnosis method
Wiring error or the sensor fault:
Replace the sensor.
Solution
115 / 276 EN