Emax EDRYHT0028, Instruction Manual

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AIR DRYER INSTRUCTION MANUAL
8
TROUBLESHOOTING
POSSIBLE CAUSE (S) CORRECTIVE ACTION
Power failure Check power to unit
T emperature switch is
disconnected
Reset
Faulty wiring, loose terminals
Have electrician check
electrical connections
Compressor motor damage
Have compressor check and
replace
Contactor damage
Have contactor check and
replace
Dryer not running
Refrigerant leaks
Leak test and repair,
refrigerant to be re-filled.
Compressor run
discontinues
Lack of refrigerant Refrigerant to be re-filled.
Ambient temperature too high
Check minimum/maximum
temperature ranges
Fan motor switch improperly
set
Set properly
Air-cooled models – Dirty,
clogged condenser fins,
obstructed air flow across
condenser
Clean condenser and check for
free air flow
Too much refrigerant Let out excessive refrigerant
Condense pressure
too high
Air in refrigerated cycle system Remove air in system
Condense pressure
too low
Fan motor switch improperly
set
Set properly
Thermostatic expansion valve
open degree too large
Adjust Thermostatic
expansion valve correctly
Evaporate pressure
too high
Thermostatic expansion valve
damage
Replace Thermostatic
expansion valve
Evaporate pressure
too low
Refrigerant Leak Refrigerant to be re-filled.
Compressor sounds
abnormally
Replace damaged component
System noise
Thermostatic expansion valve
sounds
Check refrigerant capacity
and replace filter