Super Multi System - Toshiba
Super Multi System - Toshiba
Super Multi System - Toshiba
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Troubleshooting<br />
Diagnostic procedure for check code<br />
Check code Operation cause<br />
[A6] 1. Outdoor unit service valve closed.<br />
Discharge temperature TD1 and TD2 alarm 2. Cooling bypass PMV error.<br />
(>130°C) 3. TD sensor error.<br />
4. Insufficient refrigerant, blockage in pipe.<br />
5. Blockage of PMV assembly on the liquid line.<br />
Are the gas pipe and liquid pipe<br />
service valves of the outdoor unit<br />
fully open ?<br />
�<br />
Are PMV 2 and SV13<br />
operating normally?<br />
�<br />
Is the cooling bypass<br />
PMV 1 normal ?<br />
�<br />
Yes<br />
Yes<br />
Are the resistance characteristics<br />
of TD sensor normal ?<br />
�<br />
Yes<br />
Yes<br />
Is wiring correct ?<br />
Yes<br />
�<br />
Insufficient refrigerant, blockage,<br />
pipe breakage.<br />
<strong>Multi</strong> Controller blockage.<br />
No<br />
No<br />
No<br />
No<br />
No<br />
�<br />
�<br />
�<br />
�<br />
�<br />
Open valves fully.<br />
Replace defective part.<br />
Cooling bypass PMV 1 error.<br />
Replace TD sensor.<br />
Correct wiring.<br />
(Check miswiring of the outdoor unit according to miswiring check function.)<br />
55
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