Haier AU96NFTAHA Service Manual page 120

(2) Back up running method of outdoor unit
1. Inverter running (6 HP outdoor unit does not have this function) When the inverter circuit or the inverter compressor has fa
(1)Cut off the main power supply;
(2)Turn the first digit of SW03 on the outdoor unit I/F PCB to ON state;
(3)Switch on the main power supply, conduct normal trial run;
(4)Make total running amount of indoor unit up to over 5 HP.
2. Back up running of commercial compressor
(HP outdoor unit does not have this function)
When the Mg-SW for fixed commercial or commercial compressor has
fault, only the inverter compressor runs.
(1)Cut off the main power supply; (2)Turn the second digit of digit 3 on the outdoor unit I/F PCB to ON state; (3)Switc
3. Back up running of Pd sensor
When the Pd sensor has fault, conduct running by fixing the value (20kgf/cm
of Pd sensor.
(1)Cut off the main power supply;
(2)Turn the first digit on the outdoor unit I/F PCB to ON state;
(3)Switch on the main power supply, conduct normal trial run;
4. Back up running of Ps sensor When the Ps sensor has fault, conduct running by fixing the value (4kgf/cm
In the following conditions, running is strictly forbidden:1)Outdoor heating running below 7*;2)Low pressure running cause
(1)Cut off the main power supply;
(2)Turn the second digit on the outdoor unit I/F PCB to ON state;
(3)Switch on the main power supply, conduct normal trial run;
5. Back up running of TS sensor
When the TS sensor has fault, it will automatically enter into back up running by fixing the value (10*) of
TS sensor. The SW01 on the outdoor unit I/F PCB is "0", SW02 is "7" and 7-segment nixie tube display becomes "1..".
6. Back up running of TE sensor
When the TE sensor has fault, it will automatically enter into auxiliary running by fixing the value (20*)
of TE sensor.
The SW01 on the outdoor unit I/F PCB is "0", SW02 is "7" and 7-segment nixie tube display becomes
"..1".
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SW03
ON
1 2 3
SW03
ON
1 2 3
SW06
ON
1 2 3
) of Ps sensor
2
SW06
ON
1 2 3