Sinclair SDV5 Series Service Manual page 65

The high pressure side is blocked, caused
by crushed or bent pipe or blocked EXV
Replace outdoor main PCB
Notes:
1. Measure sensor resistance. If the resistance is too low, the sensor has short-circuited. If the resistance is not consistent with the sensor's resistance
characteristics table, the sensor has failed.
2. An indoor load that is too large causes suction and discharge temperatures to be higher than normal.
3. Air or nitrogen in the system causes discharge temperature to be higher than normal, discharge pressure to be higher than normal, compressor current to
be higher than normal, abnormal compressor noise and an unsteady pressure meter reading.
4. In cooling mode check outdoor heat exchangers, fans and air outlets for dirt/blockages. In heating mode check indoor heat exchangers, fans and air outlets
for dirt/blockages.
5. High pressure side blockage causes discharge temperature to be higher than normal, discharge pressure to be higher than normal and suction pressure to
be lower than normal.
2.20 P8: Typhoon protection (For all models)
2.20.1 Digital display output
P8
2.20.2 Description
 P8 indicates strong wind protection.
 The system stops running.
 Error code is displayed on the outdoor unit PCB.
2.20.3 Trigger / recover condition
 Trigger condition:
Fan speed ≥400rps when the outdoor unit is not start up. Or fan speed over 400rps for 90S when outdoor unit stop
for malfunction.
 Recover condition: Detect the fan speed < 400rps for more than 120S.
 Reset method: Resume automatically.
2.20.4 Possible causes
 There is strong wind around the outdoor unit.
 DC fan motor is damaged.
 Main PCB damaged.
64
5
No
Yes
Inspect the system and fix the error