Instruction Manual ENVIRO-DUO English
20
11. FAQ and Trouble Shooting
Fault
Cause
Solution
Fan is not
revolving
Mechanical damage 1. Replace the fan
2. Factory service is
needed
1. Shut off by High
Pressure
Protection, red
light ON
2. Low Pressure
Protection, green
light ON (recovery
not finished)
3. 80% O.F.P cable
not well connected
1. Lower the pressure
of the unit
2. Check to see if the
hoses are well
connected
3. Check the
connection
4. Turn the switch two
rounds and stop at
position “1”
1. External pressure
is too high
2. Motor failure or
other component
damage
1. Turn the Switch
two rounds and
point to position "1",
and then restart
2. Factory service is
needed
1. High Pressure
Protection caused
by mis-operation
shuts the unit off,
ie: Outlet valve
closed, refrigerant
tank valve cloesd
1. Read carefully the
Operation Manual
and follow the
instructions while
operating
Compressor
doesn't work
Compressor
can't start
(blocked)
Compressor
starts but
stops within
a few
minutes
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