Hisense GBF18H-S User Manual page 105

7 . T R O U B L E S H O
7 . T R O U B L E S H O
Faul
t
Fault Description
cod
e
Water temperature sensor 2
77
fault
The unit turn off due to the IPM
91
board over heating fault
the ratio of the discharge
92 pressure than the suction
pressure is too large
The quantity of the indoor unit
93-1
is more than the set.
The quantity of the indoor unit
93-2
is less than the set.
94 outdoor address conflict
the refrigerant of the unit is
95
excessive fault
the refrigerant of the unit is not
96
enough fault
4-way valve commutation
97
failure fault
ON/OFF UNITARY AIR CONDITIONER TECHNICAL& SERVICE MANUAL V6.0
O T I N G
O T I N G
Possible Reason of Abnormality
1.The wiring of the temperature sensor
connect loose;
2.The temperature sensor is failure;
3.The sampling circuit is abnormally
1.The outdoor ambient is too high;
2. The speed of the out fan motor is too low if
the fan motor is AC fan motor;
3.The outdoor unit has been installed without
standard;
4.The supply power is too low.
1.The filter of the expansion valve is dirty;
2. The difference between the indoor room
temperature and the outdoor ambient
temperature is too large;
3. The refrigerant of the unit is not enough;
4.;The expansion is failure or the capillary is
failure
5. The outdoor ambient temperature is too
low in heating mode
1.Indoor unit quantity set is incorrect；
2.New indoor unit is added in the system.
1. Not all of the indoor unit s are power on;
2. The set quantity of the indoor unit is
incorrect;
3.Add or remove some indoor units
1. Put all the indoor units power on;
2. Reset the quantity of the indoor units;
3. Reset the quantity of the indoor units
The refrigerant of the unit is excessive
The refrigerant of the unit is not enough
1.The wiring of the 4-way valve coil connect
loose;
2.The 4-way valve coil is failure;
3.The 4-way valve is failure;
4.The driver board of the 4-way valve is
failure
How to Deal With
1.Reconnect the wiring of the
temperature sensor;
2.Replace the temperature sensor;
3.Replace the control board.
1. Normally protection;
2. Check the fan capacitor, and replace
the fan capacitor if it is failure;
3. Reinstalled the outdoor unit refer to
the installation user manual;
4.Normally protection.
1. Replace the expansion valve;
2. Normally protection;
3.Check the welding point of the unit to
confirm whether it exist leakage point,
and then add some refrigerant;
4.Replace the expansion valve or the
capillary;
5. Please let the unit operates within
the allowable temperature range.
Reset the number of the indoor units.
1. Put all the indoor units power on;
2. Reset the quantity of the indoor
units;
3. Reset the quantity of the indoor units
Change the setting address of the
outdoor unit
Discharge the refrigerant and charge
the refrigerant refer to the rating label
Discharge the refrigerant and charge
the refrigerant refer to the rating label
1. Reconnect the wiring of the 4-way
valve;
2. Replace the 4-way valve coil;
3. Replace the 4-way valve;
4.Replace the driver board of the 4-way
valve.
REMARKS
For Heat
pump water
heater&wate
r chiller air
conditioner
VRF
VRF
VRF
VRF
VRF
VRF
FOR
VRF&inverte
r unitary
types
103