MULTI TYPE
MULTI TYPE
MULTI TYPE
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Main<br />
remote<br />
controller<br />
Check code<br />
Outdoor 7-segment display<br />
Check<br />
code<br />
Sub-code<br />
AI-NET central<br />
control<br />
remote<br />
controller<br />
Location<br />
of<br />
detection<br />
Description<br />
System<br />
status<br />
Error detection<br />
condition(s)<br />
Check items (locations)<br />
01: TK1 oil<br />
circuit error<br />
02: TK2 oil<br />
circuit error<br />
03: TK3 oil<br />
circuit error<br />
04: TK4 oil<br />
circuit error<br />
05: TK5 oil<br />
circuit error<br />
I/F<br />
Oil level<br />
detection<br />
circuit error<br />
All stop<br />
No temperature<br />
change is detected<br />
by TK1 despite<br />
compressor 1 having<br />
been started.<br />
• Check for disconnection of TK1 sensor.<br />
• Check resistance characteristics of<br />
TK1 sensor.<br />
• Check for connection error involving<br />
TK1, TK2, TK3, TK4, and TK5 sensors<br />
• Check for faulty operation in SV3E or<br />
SV3F valve.<br />
• Check for clogging in oil equalizing<br />
circuit capillary and faulty operation in<br />
check valve.<br />
• Check for refrigerant entrapment inside<br />
compressor.<br />
No temperature<br />
change is detected<br />
by TK2 despite<br />
compressor 2 having<br />
been started.<br />
• Check for disconnection of TK2 sensor.<br />
• Check resistance characteristics of<br />
TK2 sensor.<br />
• Check for connection error involving<br />
TK1, TK2, TK3, TK4, and TK5 sensors<br />
• Check for faulty operation in SV3E or<br />
SV3F valve.<br />
• Check for clogging in oil equalizing<br />
circuit capillary and faulty operation in<br />
check valve.<br />
• Check for refrigerant entrapment inside<br />
compressor.<br />
H16<br />
H16<br />
d7<br />
No temperature<br />
change is detected<br />
by TK3 despite<br />
compressor 3 having<br />
been started.<br />
• Check for disconnection of TK3 sensor.<br />
• Check resistance characteristics of<br />
TK3 sensor.<br />
• Check for connection error involving<br />
TK1, TK2, TK3, TK4, and TK5 sensors<br />
• Check for faulty operation in SV3E or<br />
SV3F valve.<br />
• Check for clogging in oil equalizing<br />
circuit capillary and faulty operation in<br />
check valve.<br />
• Check for refrigerant entrapment inside<br />
compressor.<br />
No temperature<br />
change is detected<br />
by TK4 despite<br />
compressor having<br />
been started.<br />
• Check for disconnection of TK4 sensor.<br />
• Check resistance characteristics of<br />
TK4 sensor.<br />
• Check for connection error involving<br />
TK1, TK2, TK3, TK4, and TK5 sensors<br />
• Check for faulty operation in SV3E or<br />
SV3F valve.<br />
• Check for clogging in oil equalizing<br />
circuit capillary and faulty operation in<br />
check valve.<br />
• Check for refrigerant entrapment inside<br />
compressor.<br />
No temperature<br />
change is detected<br />
by TK5 despite<br />
compressor having<br />
been started.<br />
• Check for disconnection of TK5 sensor.<br />
• Check resistance characteristics of<br />
TK5 sensor.<br />
• Check for connection error involving<br />
TK1, TK2, TK3, TK4, and TK5 sensors<br />
• Check for faulty operation in SV3E<br />
valve.<br />
• Check for clogging in oil equalizing<br />
circuit capillary and faulty operation in<br />
check valve.<br />
• Check for refrigerant entrapment inside<br />
compressor.<br />
H25 H25 –<br />
I/F<br />
TD3 sensor<br />
miswiring<br />
(incomplete<br />
insertion)<br />
All stop<br />
Air discharge<br />
temperature (TD3)<br />
does not increase<br />
despite compressor<br />
3 being in operation.<br />
• Check installation of TD3 sensor.<br />
• Check connection of TD3 sensor<br />
connector and wiring.<br />
• Check resistance characteristics of<br />
TD3 sensor.<br />
• Check for defect in outdoor P.C. board<br />
(I/F).<br />
185
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