Daikin ComfortNet DX7TC Service Instructions Manual page 63

SERVICING
Run time f or last 4 cycles
is less than 3 minutes
each.
Compressor protector has
not tripped.
Low pressure and high
pressure switches are
closed.
Integrated control
module diagnostic/status
LED displ ay sho ws the
indicated code .
Compressor and outdoor
f .
Compressor protector tr ips
four consecutiv e times .
Average r un time between
trips is less than 15
seconds .
Integrated control
module diagnostic/status
LED displ ay sho ws the
indicated code .
displa ys error message .
Compressor and outdoor
f or greater than
4 hours .
Low pressure and high
pressure switches are
closed.
Integrated control
module diagnostic/status
LED displ ay sho ws the
indicated code .
displa ys error message .
Compressor and outdoor
f .
Low pressure and high
pressure switches are
closed.
Integrated control
module diagnostic/status
LED displ ay sho ws the
indicated code .
displa ys error message .
Digit 3 Digit 2 Digit 1
0 3 Shor t Cycling
0 4 Loc ked Rotor
0 5 Open Circui t
0 6 Open Star t
Circuit
CMPR 03 Intermittent
SHR T thermostat
CYCLE demand.
Faulty
compressor
relay.
04 Compressor
R OTO R bear ings are
seiz ed.
Failed
compressor r un
capacito r.
Faulty r un
capacitor wi ring.
Low line v oltage.
05 Po wer is
CIRCUIT disconnected.
Failed
compressor
protector.
Compressor not
properly wired to
control.
06 Compressor star t
ST AR T winding is open.
Failed
compressor r un
capacitor .
Faulty r un
capacitor wi ring.
Compressor not
properly wired to
control.
Faulty
compressor
wiring.
PCBHR104
Chec k ther mostat Tu rn power OFF pr ior
and ther mostat to repai r.
wiring; repair/ Fault will clear after 4
replace as consecuti ve nor mal
needed. cycles .
Chec k Fault ma y be cleared
compressor by cycling 24V AC to
relay operation; control.
replace control as Replace with correct
needed. replacement par t(s).
Minimum compressor
runt time is changed
from 30 seconds to 3
minutes.
Chec k Tu rn power OFF pr ior
compressor to repai r.
operation; repair/ Must clear f ault by
replace as cycling 24V AC to
needed. control.
Chec k r un Replace with correct
capacito r; replace replacement par t(s).
as needed.
Chec k wiring;
repair/replace as
needed.
Ve rify line v oltage
is within range
on rating plate;
contact local
utility is out of
range .
Chec k circuit Tu rn power OFF pr ior
break ers and to repai r.
fuses . Fault will clear after
Chec k wiring normal cycl e.
to unit; repair/ Fault ma y be cleared
replace as by cycling 24V AC to
needed. control.
Chec k Replace with correct
compressor ; replacement par t(s).
repair/replace as
needed
Chec k
compressor
wiring; repair/
replace as
needed.
Chec k Tu rn power OFF pr ior
compressor ; to repai r.
repair/replace as Fault will clear after 1
needed. normal cycl e.
Chec k r un Fault ma y be cleared
capacito r; replace by cycling 24V AC to
as needed. control.
Chec k wiring; Replace will correct
repair/replace as replacement par t(s).
needed.
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