Sinclair SCV-EB Series Service Manual page 59

5.15 H6, HH Troubleshooting
5.15.1 Digital display output
5.15.2 Description
 H6 indicates a DC fan error.
 HH indicates that H6 protection has occurred 10 times in 2 hours. When an HH error occurs, a manual system restart
is required before the system can resume operation.
 Heat pump stops running.
 Error code is displayed on the refrigerant system PCB digital tube and user interface..
5.15.3 Procedure
making the fan running in the wrong
direction or the fan speed is too high or
Some power wires or communication
wires of fan are not connected properly
The fan motor is blocked or has failed
The power supply is abnormal
Replace inverter module
H6 / HH
is blowing towards the fan,
too slow
No
No
No
No
Changer the outdoor unit's installation
Yes
direction or build a shelter to protect the
fan from strong wind
Ensure power and communication wires
Yes
are connected properly
Remove obstruction or replace the fan
Yes
Yes
Check the power supply equipment
motor
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