Wall - Vaillant VA 6-050 MXNHDI Installation Manual

16 Error Codes
Note!
1. Please contact the installers or distributors
when trouble happens to repair it.
2. Turn the power off and power on again, if the
failure code recurs, please inform the franchiser.
3. Failure codes marked with * are resumable.
16.3 Wall units
Trouble Shooting
Faulty temperature sensor Tai
Faulty temperature sensor Tc1
Faulty temperature sensor Tc2
Faulty temperature sensor Tm
Faulty EEPROM on indoor unit PCB
Abnormal communication between indo-
or and outdoor unit
Indoor unit address repeated
Faulty indoor unit fan motor
Faulty driver of indoor unit fan motor
Abnormal communication between chip
TMP/807 and chip TMP/846
Malfunction on outdoor unit
Note!
1. Please contact the installers or distributors
when trouble happens to repair it.
2. Turn the power off and power on again, if the
failure code recurs, please inform the franchiser.
3. Failure codes marked with * are resumable.
36
form the franchiser form the franchiser.
Failure Code
(Displayed on LCD)
1*
2*
3*
4*
5
6*
9
11
12
14*
20
form the franchiser. form the franchiser
Possible Reasons
Sensor disconnected, or broken, or at
wrong position, or short circuit
Sensor disconnected, or broken, or at
wrong position, or short circuit
Sensor disconnected, or broken, or at
wrong position, or short circuit
Sensor disconnected, or broken, or at
wrong position, or short circuit
Faulty indoor unit PCB
Wrong connection, or the wires be disconnected,
or wrong address setting of indoor units, or
faulty PCB, or faulty power supply
Wrong setting of indoor unit address
Fan is blocked, or the terminal is disconnected
from the PCB, or faulty indor unit PCB
Faulty indoor unit PCB
Faulty indoor unit PCB
Check the outdoor unit
Multi Split Type Installation Manual