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PROBLEM
LOW COMPRESSOR OIL
LEVEL
"HIGH OIL DIFFERENTIAL
PRESSURE" FAULT
"HIGH AMBIENT TEMP"
FAULT
Auto restart will occur after
a drop in temperature.
"LOW AMBIENT TEMP"
FAULT
Cut-out = 25°F for standard
ambient operation.
A Low Ambient Kit must be
be installed for operation
below 25°F.
CAUSE
1. Low oil charge.
1. Oil filter is dirty.
2. Faulty oil or discharge
pressure transducers or
wiring.
1. High ambient cut-out
is set too low.
2. Temperature sensed
incorrectly by thermistor.
3. Fans rotating backwards.
4. Air flow to unit restricted
or is being recirculated.
1. Temperature of outside air
is below cut-out.
2. Temperature sensed
incorrectly by thermistor.
3. Low ambient cut-out set
too high.
SOLUTION
1. Oil level should be
visible in either sight
glass at all times. Add
YORK "E" (R-22) oil if
necessary.
1. Change oil filter.
2. Check / replace
transducers or repair
wiring.
1. Re-program cut-out.
2. Verify displayed ambient
temp. is within + or - 15°F
of a thermometer placed
next to the OAT sensor.
3. Air flow from forward fans
must be up. Correct fan
rotation.
4. Check recommended
installation clearances.
1. No problem exists.
2. Verify displayed ambient
temperature is within + or -
15°F of a thermometer
placed next to the
OAT sensor.
3. Adjust as necessary.
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