Canatal M52 - Low Pressure or Short Cycling Alarm

M52 Microprocessor User's Guide
M52UMCT Oct-03 50
Low Pressure or Short Cycling Alarm
Low pressure/short
cycling alarm
Compressor low
pressure cutout
switch intervention
Wrong low pressure
cutout switch
calibration
Re-calibration
the low pressure
cutout switch
Low refrigerant charge
Check possible
leak, repair and
recharge
Failure liquid line
solenoid valve
Replace
defective
solenoid valve
Too low
suction
pressure ?
Too low condensing
pressure
Check
condenser
control circuit
Failure thermostatic
expansion valve
Replace
defective
thermostatic
expansion valve
no
Clogged filter - drier
Replace filter -
drier
Too low air flow
Check possible
obstructions in
air path and
clogged air filter
yes