EN | 33
Code Descripon Soluon
288
IPM over heat
protecon
1. The heat dissipaon is poor. The condensing fan rotates at a low speed
or stops unexpectedly.
2. The ambient temperature rises too fast, leading to too late reacon of
over-temperature frequency reducon.
320
Compressor current
protecon
1. The compressor is temporarily overloaded (for example, liquid
compression).
2. The program does not match the compressor.
3. The U, V, and W lines of the compressor are inversely connected, and the
compressor reverses.
4. Compressor wear (lack of oil, liquid compression lead to wear cylinder
block).
384
PFC module over
heat protecon
1. The heat dissipaon is poor. The condensing fan rotates at a low speed
or stops unexpectedly
2. The loop temperature rises too fast, leading to too late reacon of
over-temperature frequency reducon
For malfuncons without error codes, see the table below:
Phenomenon Cause Soluon
Unit is not running
1. Power outage
2. Power switch is not connected
3. Power switch fuse is burned-out
4. Timing is not up
1. Please wait for power supply recovery.
2. Connect power.
3. Replace fuse.
4. Please wait or cancel ming seng.
Unit is not running
aer starng up
1. Compressor protecon me interval
is not up.
2. Water temperature of the unit does
not reach starng up water tempera-
ture value.
1. Please wait paently for the end of
protecon me.
2. Normal phenomenon and wait for
water temperature to reach.
Unit is running
normally, but hot
water temperature
is low
1. Improper temperature seng
2. Large hot water consumpon
3. Air inlet port or outlet port of
outdoor machine or indoor machine
is blocked
1. Set up proper temperature.
2. Wait for temperature of hot water to
rise.
3. Clear tuyere obstrucon.
Unit is running
automacally
Reach ming to start up.
Please shutdown manually or cancel
ming if needn’t start up.
5. MAINTENANCE
5. MAINTENANCE
In the case of a fault and/or malfuncon of the heat pump, the power supply must be disconnec-
ted and no aempt must be made to repair the fault.
Repair work may only be carried out by an authorised technical support service using original spare
parts. Failure to respect the above provisions can have a negave inuence on the safe operaon
of the heat pump.