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54
Common Faults and Solutions
If your solar air conditioner cannot work normally, please check the following items before maintenance. If the faults
cannot be solved, please contact an HVAC technician or the distributor.
Phenomenon
Possible Reason
Solution
Out of operation
1. Power failure
2. Breaker tripping
3. Voltage is exceedingly low.
4. Air conditioner fuse is burnt out.
5. Air conditioner is turned off as a
result of the timer being set
incorrectly.
6. Air conditioner is in defrost mode.
1. Reconnect the power supply
2. Contact a service technician
3. Consult the electrician or distributor. Buy
a stabilizing voltage supply to ensure
operation. (below 42v)
4. Change the fuse or consult a service
technician.
5. Cancel the Timer, shut down, and restart
the system.
6. Please wait for a moment.
Poor cooling and
heating effect
1.
The filters are dirty or blocked
2.
A heat source or the number people
are indoors are generating heat
above the unit’s capacity.
3.
Temperature setting is incorrect.
4.
The air inlet or air outlet of the Indoor
Unit are blocked.
5.
A window or the door is open.
6.
Outdoor temperature is below 0
℃
while heating.
7.
Refrigerant level is low.
8.
The solar panels are not in direct
sunlight.
1. Clean filters to improve air flow efficiency
2. Remove the heat source if possible.
(Make sure your air conditioner has the
correct capacity when purchasing.)
3. Reset the temperature.
4. Remove objects so airflow is
unrestricted
5. Close doors and windows to avoid
conditioned air escaping.
6. Other subsidiary heating apparatuses
can be applied simultaneously.
7. Contact a technician if refrigerant is low.
8. Move solar panels so they face to sun.
Strange noise
from unit
1. Water flow sound
2. Exhaust sound
3. Arrangement is instable.
4. The operation noise is obviously
unusual.
1. Refrigerant is circulating in the machine
when the air conditioner is running or
switches off. Please wait for a moment.
2. The sound of the four way valve
switching. Please wait for a moment.
3. Contact your installation technician. The
system may be installed incorrectly.
4. If unusual noise is heard, please contact
a service technician.
Compressor
cannot work.
1. The temperature setting is incorrect.
2. The LCD shows Timer
is ‘on’.
3. For protection, the compressor will
not work in the first 3 minutes. Please
wait for a moment.
1. Reset the temperature.
2. Cancel the Timer, then restart the
system.
3. This is a normal phenomenon. Please
wait for a moment.
Fan does not
immediately blow
when heating.
1. If the heat pump blows when the
evaporator is not preheated, the air
circulated will be cold. Please wait for
the evaporator to preheat.
1. Please wait for a moment. Allow the coil
to preheat.
The compressor
starts and stops
frequently.
1. The input voltage is exceedingly low.
2. Too many appliances are on the
same line. The voltage for the air
conditioner is insufficient.
3. The room does not retain heat
1. Check the power source (voltage and
wire diameter). When the voltage is low,
and the wire gauge may be too small.
You can also buy a power stabilizer, or
wire the system to municipal power. You
may also wish to consult an HVAC
technician or the distributor.
2. Prepare a special power cord for the air
conditioner.
3. Improve the insulation of the room. Also
check for any open windows, doors, or
drafts that may be caused by improper
insulation.
If your solar air conditioner is not working normally, please check above items before performing any maintenance or
service. If the faults cannot be solved, please contact an HVAC technician or the distributor.
