Toshiba RAV-SM563UT-E Service Manual/Integration page 83

Wireless sensor Wired remote
lamp display controller
Operation Timer Ready Check code
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L09
Outdoor unit and other errors
• Communication error between CDB and IPDU
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L29 (Coming-off of connector)
• Heat sink temperature error
(Detection of temperature over specified value)
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Abnormal outside interlock input
L30
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Phase detection protective circuit operates. (Normal models)
L31
Fan motor thermal protection
No check code is displayed.
Discharge temperature error
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P03 • Discharge temperature over specified value was detected.
High-pressure protection error by TE sensor
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P04 (Temperature over specified value was detected.)
Float switch operation
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P10 • Disconnection, coming-off, defective float switch contactor of float
circuit
Indoor DC fan error
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P12
Error in 4-way valve system
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P19 • Indoor heat exchanger temperature lowered after start of heating
operation.
Outdoor DC fan error
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P22
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Inverter over-current protective circuit operates. (For a short time)
P26
Short voltage of main circuit operates.
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IPDU position detection circuit error
P29
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Own unit stops while warning is output to other indoor units.
P31
For an error mode detected in outdoor unit, the fan operates because sub unit of a group operation does not communicate with the outdoor unit.
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Diagnostic function
Status of air
Cause of operation
conditioner
Operation continues.
(Compressor stops.)
(Automatic reset)
Stop (Sub unit)
(Automatic reset)
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Condition
Stop Displayed when 1. Set the indoor capacity. (DN=I1)
error is detected
Stop Displayed when 1. Check cables of CDB and IPDU.
error is detected
2. Abnormal overload operation of refrigerating cycle
Stop Displayed when 1. Check outside devices.
error is detected 2. Check indoor P .C. board.
Displayed when 1. Check power phase order (Reversed phase)/phase missing.
error is detected
2. Check outdoor P .C. board.
Stop Displayed when 1. Check thermal relay of fan motor.
error is detected 2. Check indoor P .C. board.
Stop Displayed when 1. Check refrigerating cycle. (Gas leak)
error is detected 2. Trouble of PMV
3. Check Td sensor.
Stop Displayed when 1. Overload operation of refrigerating cycle
error is detected 2. Check outdoor temperature sensor (TE).
3. Check outdoor CDB P.C. board.
Stop Displayed when 1. Defect of drain pump
error is detected 2. Clogging of drain pump
3. Check float switch.
4. Check indoor P .C. board.
Stop 1. Defective detection of position
Displayed when
error is detected
2. Over-current protective circuit of indoor fan driving unit operates.
3. Lock of indoor fan
4. Check indoor P .C. board.
Stop Displayed when 1. Check 4-way valve.
error is detected 2. Check indoor heat exchanger (TC/TCJ) sensor.
3. Check indoor P .C. board.
1. Defective detection of position
Stop Displayed when
error is detected 2. Over-current protective circuit of outdoor fan driving unit operates.
3. Lock of outdoor fan
4. Check outdoor CDB P.C. board.
Stop Displayed when 1. Inverter immediately stops even if restarted. : Compressor motor rare short
error is detected 2. Check IPDU. : Cabling error
Stop 1. Position detection circuit operates even if operating compressor by
Displayed when
removing 3P connector. : Replace IPDU.
error is detected
1. Judge sub unit while master unit is in [E03], [L03], [L07], [L08].
Displayed when
error is detected 2. Check indoor P .C. board.
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: Flash, : Go on, : Go off
Judgment and measures
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