Toshiba RAV-SP454ATP-E Service Manual page 57

Check code
Indoor unit
after
4 series
Discharge temp. error
P03 ∗
∗ Discharge temp. (TD) detected
temperature over the specified temp.
Case thermostat operation
H04
∗ Abnormal overheat of compressor
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 device
P29 ∗
Position detection circuit error
∗
: AP40 to AP56 is only.
SVM-12085_051-114.indd 57 SVM-12085_051-114.indd 57
Operation of diagnostic function
Status of
Cause of operation
air conditioner
Stop
Stop
Stop
Stop
Stop
Stop
Stop
Condition
1. Check refrigerating cycle (Gas leak)
Displayed when
2. Trouble of electronic expansion valve
error is detected
3. Check discharge temp. sensor (TD).
1. Check case thermostat and connector.
2. Check gas leak, recharge
Displayed when
3. Check whether the service valve is fully opened.
error is detected
4. Check PMV (Pulse Motor Valve).
5. Check broken pipe.
Displayed when 1. Check power supply voltage. AC198 to 264V
error is detected
1. Check outdoor heat exchanger sensor (TL).
2. Check indoor heat exchanger sensor (TC, TCJ).
3. Check full open of service valve.
Displayed when 4. Check indoor/outdoor fan.
error is detected
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.
Displayed when
2. Check power supply voltage. AC198 to 264V
error is detected
3. Check outdoor P .C. board.
1. When performing operation while taking-off compressor
wire, P26 error occurs. Check control P .C. board.
Displayed when
error is detected 2. When performing operation while taking-off compressor
wire, an error does not occur. (Compressor rare short)
Displayed when 1. Check control P .C. board.
error is detected
– 57 –
FILE NO. SVM-12085
Judgment and measures
12/06/12 11:15 AM 12/06/12 11:15 AM