Mitsubishi Electric PQHY-P72ZLMU-A Service Handbook page 250

[ IX Troubleshooting ]
Error
Prelimi-
(prelim-
Error nary
inary)
Code error
detail
code
code
5111 - -
5112 - -
5115 - -
5116 - -
5201 - -
5201 1402 -
5203 - -
[0]
[115]
5301 4300 [117]
[119]
[120]
5701 - -
6201 - -
6202 - -
6600 - -
6601 - -
6602 - -
6603 - -
6606 - -
6607 - -
6608 - -
6831 - -
6832 - -
6833 - -
6834 - -
6841 - -
6842 - -
6843 - -
6846 - -
HWE15150
Error code definition
Liquid inlet temperature
(TH11)
Bypass outlet temperature
Temperature sensor
(TH12)
fault
LEV3 outlet temperature
(BC controller)
(TH15)
LEV3 inlet temperature
(TH16)
High-pressure sensor fault (63HS1)
High-pressure sensor fault
(Heat source unit HPS/BC controller PS1)
Intermediate pressure sensor fault
(BC controller PS3)
Backup operation
ACCT sensor fault
ACCT sensor circuit fault
Open-circuited IPM/Loose ACCT connector
Faulty ACCT wiring
Loose float switch connector
Remote controller board fault (nonvolatile memory
error)
Remote controller board fault (clock IC error)
Address overlaps
Polarity setting error
Transmission processor hardware error
Transmission line bus busy error
Communication error between device and trans-
mission processors
No ACK error
No response error
MA controller signal reception error (No signal re-
ception)
MA remote controller signal transmission error
(Synchronization error)
MA remote controller signal transmission error (H/
W error)
MA controller signal reception error (Start bit de-
tection error)
A control communication synchronism not recover
A control communication transmission/reception
hardware trouble
A control communication start bit detection error
Start-up time over
- 241 -
Searched unit
O
O
O
O
O
O O
O
O
O
O
O
O
O
O
O
O O O O O
O
O O O O O
O O O O O
O O O O O
O O O O O
O O O O O
O O
O O
O O
O O
O
O
O
O
Notes
GB