PROBLEM
A
Unit does not start
but alarm red led
is off
PROBLEM
B
Fan starts,
compressor
does not start,
but red alarm led
is off
LED ON
None
POWER supply led
Any light
POWER supply led,
REQUEST led
POWER supply led,
REQUEST led
COMPRESSOR led
LED ON
POWER supply led,
REQUEST led
COMPRESSOR led
Any led
PROBABLE CAUSE
Power supply missing
Humidistat on set
Compressor thermal
protection enabled,
compressor defective
Compressor thermal
protection enabled,
compressor defective
fan defective
Electronic board or led
Board defective
PROBABLE CAUSE
Compressor thermal
Protection enabled,
compressor defective
Electronic board or led
Board defective
58
CORRECTIVE ACTION
Provide power supply,
replace fuses
Set a lower set point
Let the compressor cool
down, replace compressor
defective
Let the compressor cool
down, replace compressor
defective, replace fan defective
Replace defective board
CORRECTIVE ACTION
Let the compressor cool
Down, replace compressor
defective
Replace defective board