Toshiba RAV-GM561ATP-E Service Manual page 58

Operation of diagnostic function
Check code
Cause of errors
Indoor unit
H03 Current detection circuit error
Case thermostat operation
H04
*Abnormal overheat of compressor
Discharge temp. error
P03
∗ Discharge temp. (TD) over
specified value was detected.
P04 High pressure SW system error
P05 Power supply voltage error
High pressure protective operation
During cooling operation, outdoor
temp. sensor (TL) detected
P20
temperature over specified temp.
During heating operation, indoor
temp. sensor (TC, TCJ) detected
temperature over specified temp.
P22 Outdoor fan system error
Short-circuit error of compressor
P26
driving element
Position detection circuit error
P29
Status of
Condition
air conditioner
Displayed when
Stop
error is detected
Displayed when
Stop
error is detected
Displayed when
Stop
error is detected
Displayed when
Stop
error is detected
Displayed when
Stop
error is detected
Stop Displayed when
error is detected
Displayed when
Stop
error is detected
Stop Displayed when
error is detected
Displayed when
Stop
error is detected
- 58 -
FILE NO. SVM-18043
Judgment and measures
1. Check outdoor P.C. board.
(AC current detection circuit)
1. Check case thermostat and its connector
2. Check gas leak, recharge
3. Check full open of service valve
4. Check PMV (Pulse Motor Valve)
5. Check broken pipe
1. Check refrigerating cycle (Gas leak)
2. Check PMV (Pulse Motor Valve)
3. Check discharge temp. sensor (TD).
1. Check service valves are fully opened.
(Gas side, Liquid side)
2. Check outdoor fan operation.
3. Check motor error of outdoor fan.
4. Check clogging of outdoor PMV.
5. Check clogging of heat exchanger in indoor/outdoor units.
6. Short-circuit of suction/discharge air in outdoor unit.
7. Check outdoor P.C. board error.
8. Check fan system error (Cause of air volume drop) at
indoor side.
9. Check PMV opening status in indoor unit.
1. Check power supply voltage. 50 Hz : AC 198 to 264 V,
60 Hz : AC 198 to 242 V
1. Check outdoor heat exchanger sensor (TL).
2. Check indoor heat exchanger sensor (TC, TCJ).
3. Check full open of service valve.
4. Check indoor/outdoor fan.
5. Check PMV (Pulse Motor Valve).
6. Check clogging and short circuit of indoor/outdoor heat
exchanger.
7. Overcharge of refrigerant. Recharge
1. Check lock of fan motor.
2. Check power supply voltage.
50 Hz : AC 198 to 264 V, 60 Hz : AC 198 to 242 V
3. Check outdoor P.C. board.
1. When performing operation while taking-off compressor wire.
If P26 error occurs, check control P.C. board.
2. When performing operation while taking-off compressor wire.
If an error does not occurs, compressor is layer short.
1. Check control P.C. board.