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Problem
The unit is not
working
The unit starts and
stops frequently
Poor heating
performance
Page 14
14
Possible Causes
Power failure
The power is turned o
The fuse is burned out
The Unit's 3-minute protection
has been activated
Timer is activated
There's too much or too little
refrigerant in the system
Incompressible gas or moisture
has entered the system.
System circuit is blocked
The compressor is broken
The voltage is too high or
too low
The outdoor temperature is
extremely low
Cold air is entering through
doors and windows
Low refrigerant due to leak or
long-term use
Solution
Wait for the power to be restored
Turn on the power
Replace the fuse
Wait three minutes after restarting the unit
Turn timer o
Check for leaks and recharge the system with
refrigerant.
Evacuate and recharge the system with refrigerant
Determine which circuit is blocked and replace the
malfunctioning piece of equipment
Replace the compressor
Install a manostat to regulate the voltage
Use auxiliary heating device
Make sure that all doors and windows are closed
during use
Check for leaks, re-seal if necessary and top o
refrigerant
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