SUPER DIGITAL
SUPER DIGITAL
SUPER DIGITAL
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10-1. Summary of Troubleshooting<br />
<br />
1. Before troubleshooting<br />
10. TROUBLESHOOTING<br />
1) Required tools/instruments<br />
• + and – screwdrivers, spanners, radio cutting pliers, nippers, push pins for reset switch<br />
• Tester, thermometer, pressure gauge, etc.<br />
2) Confirmation points before check<br />
a) The following operations are normal.<br />
1. Compressor does not operate.<br />
• Is not 3-minutes delay (3 minutes after compressor OFF)?<br />
• Is not the outdoor unit in standby status though the remote controller reached the setup<br />
temperature?<br />
• Does not timer operate during fan operation?<br />
• Is not an overflow error detected on the indoor unit?<br />
• Is not outside high-temperature operation controlled in heating operation?<br />
2. Indoor fan does not rotate.<br />
• Does not cool air discharge preventive control work in heating operation?<br />
3. Outdoor fan does not rotate or air volume changes.<br />
• Does not high-temperature release operation control work in heating operation?<br />
• Does not outside low-temperature operation control work in cooling operation?<br />
• Is not defrost operation performed?<br />
4. ON/OFF operation cannot be performed from remote controller.<br />
• Is not the control operation performed from outside/remote side?<br />
• Is not automatic address being set up?<br />
(When the power is turned on at the first time or when indoor unit address setting is changed, the<br />
operation cannot be performed for maximum approx. 5 minutes after power-ON.)<br />
• Is not being carried out a test run by operation of the outdoor controller?<br />
b) Did you return the cabling to the initial positions?<br />
c) Are connecting cables of indoor unit and remote controller correct?<br />
2. Troubleshooting procedure<br />
When a trouble occurred, check the parts along with the following procedure.<br />
Trouble → Confirmation of check code display → Check defective position and parts.<br />
NOTE :<br />
For cause of a trouble, power conditions or malfunction/erroneous diagnosis of microcomputer due to outer<br />
noise is considered except the items to be checked. If there is any noise source, change the cables of the<br />
remote controller to shield cables.<br />
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