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Manuals
Brands
Trane Manuals
Heat Pump
A5HP4
Installation and operation manual
Trane A5HP4 Installation And Operation Manual page 22
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Table of Contents
Troubleshooting
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Compressor won't run
Contactor is closed
Check for high
voltage to contactor
Is high voltage present
at T1 and T2 ?
NO
Check power
supply from
disconnect and/or
breaker panel.
22
Check for open IOL
YES
(Internal Overload)
Check resistance of
C to S and C to R
Does the
resistance check
show an open
circuit from C to S
or C to R?
NO
Check for open
windings.
Does a resistance check
show an open circuit
between R and S?
NO
Check for locked
rotor
Is voltage present
at C to S and C
to R with locked
rotor amps on C?
NO
Check wiring to
compressor
C, S and R
Allow compressor
YES
time to cool and
re-test
YES
Replace the
compressor
Check Start-
YES
Capacitor and
Relay (if present)
and Run Capacitor
Do the start
components and
run capacitor
check good?
NO
Replace start
components and/
or run capacitor
YES
Replace the
compressor
88-A5HP4001-1A-EN
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