Toshiba RAV-GM 1101UT-E, Service Manual

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Operation of diagnostic function
Check code
Status of
air conditioner
Condition Cause of operation
Judgment and measures
Indoor unit
P26
Short-circ u it tro u ble of compre ss or
driving element
Stop
Di s played when
tro u ble i s detected
1. When performing operation while taking-off compre ss or
wire, P26 tro u ble occ u r s . Check control P.C. board
(MCC-1705).
2. When performing operation while taking-off compre
ss or
wire, an tro u ble doe s not occ u r. (Compre ss or rare s hort)
H04
Ca s e thermo s tat operation
∗
Abnormal overheat of compre ss or
Stop
Di s played when
tro u ble i s detected
1. Check ca s e thermo s tat and connector.
2. Check ga s leak, recharge
3 . Check f u ll open of s ervice valve.
4. Check PMV (P u l s e Motor Valve).
5. Check broken pipe.
P04 High pre ssu re SW s y s tem tro u ble Stop
Di s played when
tro u ble i s detected
1. Check s ervice valve s are f u lly opened.
(Ga s s ide, Liq u id s ide)
2. Check of o u tdoor fan operation.
3 . Check motor tro u ble of o u tdoor fan.
4. Check clogging of o u tdoor PMV.
5. Check clogging of heat exchanger in indoor/o u tdoor u nit s .
6. Short-circ u it s tat us of su ction/di s charge air in o u tdoor u nit.
7. Check o u tdoor P.C. board tro u ble.
8. Check fan s y s tem tro u ble (Ca us e of air vol u me drop)
at indoor s ide.
9. Check PMV opening s tat us in indoor u nit.
High pre ssu re SW s y s tem tro u ble Stop
Di s played when
tro u ble i s detected
1. Check s ervice valve s are f u lly opened.
(Ga s s ide, Liq u id s ide)
2. Check of o u tdoor fan operation.
3 . Check motor tro u ble of o u tdoor fan.
4. Check clogging of o u tdoor PMV.
5. Check clogging of heat exchanger in indoor/o u tdoor u nit s .
6. Short-circ u it s tat us of su ction/di s charge air in o u tdoor u nit.
7. Check o u tdoor P.C. board tro u ble.
8. Check fan s y s tem tro u ble (Ca us e of air vol u me drop)
at indoor s ide.
9. Check PMV opening s tat us in indoor u nit.
P0 3
Di s charge temp. tro u ble
∗
Di s charge temp. (TD) over
s pecified val u e wa s detected.
Stop
Di s played when
tro u ble i s detected
1. Check refrigerating cycle (Ga s leak)
2. Tro u ble of electronic expan s ion valve
3 . Check di s charge temp. s en s or (TD).
P05
Power su pply voltage tro u ble Stop
Di s played when
tro u ble i s detected
1. Check power su pply voltage. AC198 to 264V
P29 Po s ition detection circ u it tro u ble Stop
Di s played when
tro u ble i s detected
1. Check control P.C. board (MCC-1705).
P20
High pre ssu re protective operation
∗
D u ring cooling operation, o u tdoor
temp. s en s or (TL) detected
temperat u re over s pecified temp.
∗
D u ring heating operation, indoor
temp. s en s or (TC, TCJ) detected
temperat u re over s pecified temp.
Stop
Di s played when
tro u ble i s detected
1. Check o u tdoor heat exchanger s en s or (TL).
2. Check indoor heat exchanger s en s or (TC, TCJ).
3 . Check f u ll open of s ervice valve.
4. Check indoor/o u tdoor fan.
5. Check PMV (P u l s e Motor Valve).
6. Check clogging and s hort circ u it of indoor/o u tdoor heat
exchanger.
7. Overcharge of refrigerant. Recharge
P22 O u tdoor fan s y s tem tro u ble Stop
Di s played when
tro u ble i s detected
1. Check lock of fan motor.
2. Check power
su pply voltage between L2 and N.
AC198 to 264V
3 . Check o u tdoor P.C. board.