Toshiba CARRIER RAV-SP300AT2-UL - Manual (Page 58)

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CODE
No.
[P04]
APPLICATION CONTROL KIT
LED display
D01 D02 D03 D04
(Red) (Yellow) (Yellow) (Yellow)
¡ l l ¡
or
l ¡ l ¡
Check / Countermeasures
(Part without special mention indicates a part of the outdoor unit.)
[High-pressure SW error]
1. High-pressure SW error
2. Service valve closed.
3. Indoor/Outdoor fan error
4. Clogging of indoor/outdoor PMV
5. Loading of indoor/outdoor heat exchangers or short-circuit
6. Overcharge of refrigerant
Cooling operation → B
Heating operation
→
C
B Cooling operation
C Heating operation
Doesn’t high-pressure SW operate?
Are parts of high-pressure SW normal?
Does outdoor fan normally operate?
Does the indoor fan normally operate?
Are service valves fully opened?
Reset the power supply and perform
a test run appropriate to the season
Is the circuit wiring normal?
Open service valve fully.
Take measures
for defective position.
Check parts.
Defective → Replace
Isn’t there fan crack
or getting-out of fan?
Are connector connection,
capacitor and fans of the
fan motor normal?
Are resistance value
characteristics of the sensors
(TC, TCJ) normal?
Overcharge of refrigerant
Clogging / Pipe breakage /
Abnormal overload
Overcharge of refrigerant
Clogging / Pipe breakage /
Abnormal overload
Check P.C. board.
Defective
→
Replace
Check and repair wiring.
Connector connection /
Fan IPDU / Fan motor / Wiring
Is there any element to disturb
heat exchange of indoor unit?
Clogging of filter
Loading of heat exchanger
Short-circuit
Is there any element to disturb
heat exchange of outdoor unit?
Loading of heat exchanger
Short-circuit
Eliminate disturbing element.
Replace TC or TCJ sensor.
Repair defective position.
Check indoor P.C. board.
Defective
→
Replace
YES
YES
YES
YES
YES
YES
NO NO
NO
NO
YES
YES
YES
YES
YES
NO
NO NO
NO
NO
NO
[P05] D01 D02 D03 D04
(Red) (Yellow) (Yellow) (Yellow)
¥ ¥ l l
or
¡ l l ¡
[Power supply error (Voltage error)]
→ Refer to columns [H03] and [P04] and then check power supply and
voltage erro
LED display legend:
l
Go off, ¡ Go on, ¥ Flash (5Hz)