Daikin ComfortNet DX7TC, Service Instructions Manual

Page: 63 / 122

63
SERVICING
PCBHR104
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 .
0 3 Shor t Cycling CMPR
SHR T
CYCLE
03 Intermittent
thermostat
demand.
Faulty
compressor
relay.
Chec k ther mostat
and ther mostat
wiring; repair/
replace as
needed.
Chec k
compressor
relay operation;
replace control as
needed.
Turn power OFF pr ior
to repai r.
Fault will clear after 4
consecuti ve normal
cycles .
Fault may be cleared
by cycling 24V AC to
control.
Replace with correct
replacement par t(s).
Minimum compressor
runt time is changed
from 30 seconds to 3
minutes.
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 .
displays error message .
0 4 Loc ked Rotor
R OTO R
04 Compressor
bear ings are
seiz ed.
Failed
compressor r un
capacito r.
Faulty r un
capacitor wi ring.
Low line v oltage.
Chec k
compressor
operation; repair/
replace as
needed.
Chec k run
capacito r; replace
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.
Turn power OFF pr ior
to repai r.
Must clear f ault by
cycling 24V AC to
control.
Replace with correct
replacement par t(s).
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 .
displays error message .
0 5 Open Circui t
CIRCUIT
05 Po wer is
disconnected.
Failed
compressor
protector.
Compressor not
properly wired to
control.
Chec k circuit
break ers and
fuses .
Chec k wiring
to unit; repair/
replace as
needed.
Chec k
compressor ;
repair/replace as
needed
Chec k
compressor
wiring; repair/
replace as
needed.
Turn power OFF pr ior
to repai r.
Fault will clear after 1
normal cycl e.
Fault may be cleared
by cycling 24V AC to
control.
Replace with correct
replacement par t(s).
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 .
displays error message .
0 6 Open Star t
Circuit ST AR T
06 Compressor star t
winding is open.
Failed
compressor r un
capacitor .
Faulty r un
capacitor wi ring.
Compressor not
properly wired to
control.
Faulty
compressor
wiring.
Chec k
compressor ;
repair/replace as
needed.
Chec k run
capacito r; replace
as needed.
Chec k wiring;
repair/replace as
needed.
Turn power OFF pr ior
to repai r.
Fault will clear after 1
normal cycl e.
Fault may be cleared
by cycling 24V AC to
control.
Replace will correct
replacement par t(s).
Digit 3 Digit 1 Digit 2