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5. Trouble-shooting
Faults
The action of the
protection units
The possible fault
analysis
Solutions
1. No power
supply
display or
phase
reversal
The protection units
have no action
A. The power supply is not
switched on
B. The fuse wire of the
control loop is burned
out
C. The linear ordering of
the power supply is in
the reverse order
D. The fault of the main
switch or circuit
A. Power on after checking
B. Check the protection loop
C. Change the wires in order of
two random power supply
wires
D. Check or replace
2. Pump
overload
The loader trips
A. Over current
B. The fault of the pump
C. The fault of the pump
over loading controller
A. Reset the over loader
B. Replace after checked and
repaired
C. Replace after checked and
repaired
3. Compressor
overload
The loader trips
A. Over current
B. The fault of the
compressor
C. The fault of the
compressor over loading
controller
A. Reset the over loader
B. Replace after checked and
repaired
C. Replace after checked and
repaired
4. The high
pressure is
too high
The high pressure
switch trips
A. The refrigerant is too
much
B. The amount of blast to
the condenser is not
enough
C. The sediment
incrustation of the
condenser is too much
D. The dry filter is blocked
up
E. The open scale of the
expansion valve is too
narrow
F. The fault of
F. The fault of the fan
G. The fault of the high
ressure switch
I. The condenser is beaten
by the sunshine
A. Discharge some of the
refrigerant
B. Increase the amount of
blast to the condenser
C. Clean the condenser
D. Clean the dry filter
E. Adjust the open scale
properly
F. Replace after checked and
repaired
G.. Replace after checked and
repaired
H. Replace after checked and
repaired
I. Prevent the condenser from
being beaten by the
sunshine