Toshiba RAV-GM 1101UT-E, Service Manual

Page: 75 / 125

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Check
code
Outdoor
LED display
Check and troubleshooting
(Item without special mention Indicates part of outdoor unit.)
[P19] [4-way valve inverse trouble]
Doe s 4-way valve
work correctly?
(Check pipe temp. etc.
in cooling/heating
operation.)
I s the coil
re s i s tance
val u e of 4-way
valve normal?
Indoor TC, TCJ
s en s or normal?
Check o u tdoor
P.C.board
Replace
TE, TS s en s or
Check PMV
and replace
Replace
TC, TCJ s en s or
NO
NO
NO
Replace
4-way valve coil
NO
NG
Check 4-way valve.
Defect R Replace
NO
YES
YES
NO
OK
Temperat u re
s en s or normal?
TE s en s or CN601
TS s en s or CN600
The voltage
variation d u e to
the confirmation
of 4-way valve
relay operation,
refer to below?
I s the flow of the
refrigerant by the
PMV normal?
YES
YES
YES
[4-way valve relay operation check]
Service s witche s SW01 and SW02 can be us ed to check the operation of the
4-way valve relay.
U
s e to check whether there are any problem s with the 4-way valve or 4-way
valve coil.
[Method of operation ]
1) P us h en su re that D800 to D804 are off (or rapidly fla s hing) and that D805 i s
lit u p. If D800 to D804 are s lowly fla s hing or D805 i s fla s hing then p us h
and hold down SW01 and SW02 at the s ame time for at lea s t 5 s econd s .
D800 to D804 will t u rn off (or rapidly fla s h) and D805 t u rn on.
2) P us h and hold down SW01 for at lea s t 5 s econd s . D804 will s tart s lowly fla s hing.
3 ) P us h SW01 u ntil reaching the below [4-way valve re s i s tance val u e relay
operation] LED indication.
4) P us h SW02 u ntil D805 s tart s rapidly fla s hing.
5) P us h and hold down SW02 for at lea s t 5 s econd s . D804 will s tart s lowly
fla s hing, D805 will t u rn on, and the 4-way valve re s i s tance val u e relay
operation will t u rn on.
6) P us h and hold down SW01 and SW02 at the s ame time for at lea s t 5 s econd s
or wait 2 min u te s to ret u rn to normal control.
Check indoor P.C.board
Fail u re
→
Replace
D800
4-way valve re s i s tance
val u e relay operation
D801 D802 D803 D804
: Go OFF : Go ON : Fla s h (5 time s / s ec)