Daikin ComfortNet DX7TC Service Instructions Manual page 69

SERVICING
Digit 3
Compressor and outdoor
f .
Low pressure s witch
trip 3 times within same
thermostat demand.
Ther mostat demand is
present.
Integrated control
module diagnostic/status
LED displ ay sho ws the
indicated code .
displa ys error message .
Four consecutiv e
compressor protector tr ips
with average r un time
between tr ips greater than
1 minute and less than 15
minutes.
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 .
Ther mostat demand is
present.
Integrated control
module diagnostic/status
LED displ ay sho ws the
indicated code .
Compressor and outdoor
f .
Low pressure s witch
trip 3 times within same
thermostat demand.
Ther mostat demand is
present.
Integrated control
module diagnostic/status
LED displ ay sho ws the
indicated code .
displa ys error message .
Digit 2 Digit 1
L 1 Low Pressure
Cut Out
Loc kout
(3 Tr ips)
0 2 High Side
Fault
0 2 High
Pressure
Cut Out
Tr ip
L 2 High
Pressure
Cut Out
Loc kout
(3 Tr ips)
01 Low refr igerant
LPS
charge .
Restr iction in
liquid line.
Indoor blower
motor failure.
Indoor
thermostat set
extremely lo w.
HIGH SIDE 02 Bloc ked
FA ULT condenser coil.
Outdoor fan not
running.
02 Bloc ked
condenser coil.
Outdoor fan not
running.
HPS 02 Bloc ked
condenser coil.
Outdoor fan not
running.
Ve rify refr igerant Tu rn power OFF pr ior
charge; adjust as to repai r.
needed. Must clear f ault by
Chec k for cycling 24V AC to
restr icted liquid control.
line; repair/replace Replace with correct
as needed. replacement par t(s).
Chec k indoor
blower motor ;
repair/replace as
needed.
Chec k low
pressure switch;
repair/replace as
needed.
Chec k indoor
thermostat setting.
Chec k and clean Tu rn power OFF pr ior
condenser coil. to repai r.
Chec k outdoor Fault will clear after 4
fan motor ; repair/ consecutiv e nor mal
replace as cycles .
needed. Fault ma y be cleared
Chec k outdoor by cycling 24V AC to
fan motor wir ing; control.
repair/replace as Replace with correct
needed. replacement par t(s).
Chec k outdoor
fan motor
capacito r; replace
as needed.
Chec k and clean Tu rn power OFF pr ior
condenser coil. to repai r.
Chec k outdoor Replace with correct
fan motor ; repair/ replacement par t(s).
replace as
needed.
Chec k outdoor
fan motor wir ing;
repair/replace as
needed.
Chec k outdoor
fan motor
capacitor ; replace
as needed.
Chec k and clean Tu rn power OFF pr ior
condenser coil. to repai r.
Chec k outdoor Must clear f ault by
fan motor ; repair/ cycling 24V AC to
replace as control.
needed. Replace with correct
Chec k outdoor replacement par t(s).
fan motor wir ing;
repair/replace as
needed.
Chec k outdoor
fan motor
capacitor ; replace
as needed.
69