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Troubleshooting
Problem Possible Causes Solution
The unit is not
working
Power failure
Wait for the power to be restored
The power is turned off Turn on the power
The fuse is burned out
Replace the fuse
The Unit’s 3-minute protecon
has been acvated
Wait three minutes aer restarng
the unit
Timer is acvated
Turn mer off
The unit starts and
stops frequently
There’s too much or too lile
refrigerant in the system
Check for leaks and recharge the
system with refrigerant.
Incompressible gas or moisture
has entered the system.
Evacuate and recharge the system
with refrigerant
The compressor is broken Replace the compressor
The voltage is too high or
too low
Install a manostat to regulate the
voltage
Poor heating
performance
The outdoor temperature is
extremely low
Use auxiliary heang device
Cold air is entering through
doors and windows
Make sure that all doors and
windows are closed during use
Low refrigerant due to leak or
long-term use
Check for leaks, re-seal if necessary
and top off refrigerant
System circuit is blocked
Determine which circuit is blocked and
replace the malfunconing piece of
equipment
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