Grundig GHPH-MM08 Manuel D'utilisation page 112

13 Trouble shooting
Fault
Fault name
number
TW water tank
E07 temperature
sensor failure
T6 Inlet water
E08 temperature
sensor failure
T7 outlet water
E09 temperature
sensor failure
Communication
failure between
E10 main control
board and drive
board
Low pressure
E14 sensor LPS
failure
112 / 276 EN
Failure analysis
1. The sensor connection line
is open or short-circuited;
2. Sensor failure;
3. Main control board failure
1. The sensor connection line
is open or short-circuited;
2. Sensor failure;
3. Main control board failure
1. The sensor connection line
is open or short-circuited;
2. Sensor failure;
3. Main control board failure
1. The communication cable
is disconnected;
2. The main control board is
faulty;
3. The drive module is faulty;
1. The sensor connection line
is open or short-circuited;
2. Sensor failure;
3. The main control board is
faulty;
Diagnosis method
1. Use a multimeter to check
whether the sensor and
connection are abnormal;
2. Replace the faulty sensor with
a normal sensor to confirm
whether it is normal;
3. Replace the main control
board and confirm whether it
is normal;
1. Use a multimeter to check
whether the sensor and
connection are abnormal;
2. Replace the faulty sensor with
a normal sensor to confirm
whether it is normal;
3. Replace the main control
board and confirm whether it
is normal;
1. Use a multimeter to check
whether the sensor and
connection are abnormal;
2. Replace the faulty sensor with
a normal sensor to confirm
whether it is normal;
3. Replace the main control
board and confirm whether it
is normal;
1. Check whether the
communication cable is open
or the plug is in poor contact;
2. Replace the main control
board and confirm whether it
is normal;
3. Replace the drive board and
confirm whether it is normal;
1. Check whether the sensor and
connection are abnormal;
2. Replace the faulty sensor with
a normal sensor to confirm
whether it is normal;
3. Replace the main control
board and confirm whether it
is normal;
Heat Pump Monobloc Inverter / User Manual
Solution
1. Repair the connecting
wire and plug or
replace the sensor;
2. Replace the mother-
board;
1. Repair the connecting
wire and plug or
replace the sensor;
2. Replace the mother-
board;
1. Repair the connecting
wire and plug or
replace the sensor;
2. Replace the mother-
board;
1. Replace or repair the
communication cable;
2. Replace the main
control board;
3. Replace the drive
module;
1. Repair the connecting
wire and plug or
replace the sensor;
2. Replace the mother-
board;