14
Service tests: pumpdown, electronic expansion valve,
compressor, lockout
“Press (Next) (Previous) to continue”
Next
Service pumpdown, compressor A [Disable/Enable]
“Press (+) (-) to change setting”
Next
Is there a compressor B ?
Yes No
Service pumpdown, compressor B [Disable/Enable]
“Press (+) (-) to change setting”
Next
Is there a compressor C ?
Yes No
Service pumpdown, compressor C [Disable/Enable]
“Press (+) (-) to change setting”
Next
Is there a compressor D ?
Yes No
Service pumpdown, compressor D [Disable/Enable]
“Press (+) (-) to change setting”
Next
Electronic expansion valve test, circuit 1
“Press (+) (-) to change setting”
Next
Electronic expansion valve test, circuit 2
“Press (+) (-) to change setting”
Next
Compressor test, compressor A [Disable/Enable]
“Press (+) (-) to change setting”
Next
Is there a compressor B ?
Yes No
Compressor test, compressor B [Disable/Enable]
“Press (+) (-) to change setting”
Next
Is there a compressor C ?
Yes No
Compressor test, compressor C [Disable/Enable]
“Press (+) (-) to change setting”
Next
Default = Disable
Must be manually enabled by sevice personnel
from the UCM. The unit must be in STOP/RESET
and can be performed only once for every power-
up of the UCM. Restart inhibit will be prepositioned
and the compressor selected will start and run for
one minute. Manual closing of the liquid line angle
valve will be required.
Default = Disable
Default = Disable
Default = Disable
Default = Disable
Electronic expansion valve test will be initiated
when the unit is in STOP/RESET and Electronic
expansion valve test is set to enable. The mode will
automatically be reset to disable upon completion
of the test.
Default = Disable
Default = Disable
Allows service personnel to override the lead/lag
function and start the compressor of concern. After
the compressor starts, the display will
automatically return to “D.”
Default = Disable
Default = Disable
Service tests
Service
tests
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