Troubleshooting; Before Starting Troubleshooting; Wireless Remote Controller Type - Toshiba RAV-SM562KRT-E Service Manual

9
1. Guide to Troubleshooting
[Wired Remote Controller Type]
(1)

Before starting troubleshooting

(a) Necessary tools/measuring equipment
• Phillips screwdrivers, flat-blade screwdrivers, wrenches, pliers, nipper, etc.
• Multimeter, thermometer, pressure gauge, etc.
(b) Precheck
A The following operations are normal.
1) Compressor does not work.
• Is 3-minute delay operation functioning? (for 3 minutes after compressor OFF)
• Is thermo sensor OFF?
• Is FAN mode or TIMER mode operation going?
• Is water overflow alarm detected?
• Is high outside air temperature operation control working during heating?
2) Indoor unit fan does not work.
• Is cool air prevention control working during heating?
3) Outdoor unit fan does not work or its fan speed changes.
• Is high-temp. release operation control working during heating?
• Is low outside air temperature operation control working during cooling?
• Is defrosting operation going?
4) Operation ON/OFF by remote controller is disabled.
• Is any remote controller or external control working?
• Is auto address setting in progress?
(At t he first power on or when indoor unit address is changed, operation control is disabled for
about 5 minutes after power on.)
B Are all cables/wiring set in the initial state?
C Are indoor unit and remote controller connected correctly?
(2) Troubleshooting procedure
When an error occurs, check the unit in the following procedure.
→
Error Check indication of check code
(Note) Other than the check items in the table, malfunction or wrong diagnosis of microcomputer
due to effect of power or external noise is considered. If there is any source of noise, shield
the remote controller wiring.
[

Wireless Remote Controller Type]

(1) Before starting troubleshooting
(a) Necessary tools/measuring equipment
• Phillips screwdrivers, flat-blade screwdrivers, wrenches, pliers, nipper, etc.
• Multimeter, thermometer, pressure gauge, etc.
(b) Precheck
A The following operations are normal.
1) Compressor does not work.
• Is 3-minute delay operation functioning? (for 3 minutes after compressor OFF)
• Is thermo sensor OFF?
• Is FAN mode or TIMER mode operation going?
• Is high outside air temperature operation control working during heating?
2) Indoor unit fan does not work.
• Is cool air prevention control working during heating?

8. Troubleshooting

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Check faulty location and parts