Error Code [6607] Error Source Address = System Controller - Mitsubishi Electric PUHY-HP72 Service Handbook

[7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ]
7-8-12

Error Code [6607] Error Source Address = System Controller

1. Error code definition
No ACK error
2. Error definition and error detection method
The error is detected when no acknowledgement (ACK signal) is received after the transmission. (eg. When the data is trans-
mitted six times in a row with 30 seconds interval, the error is detected on the transmission side.)
The address/attribute appeared on the display on the remote controller indicates the controller which did not provide
the response (ACK).
3. Cause, check method and remedy
Error display
ME remote controller (RC), MA remote controller (MA)
Type of unit/controller in error
Part of the ME remote con-
trollers (RC) are experi-
encing problems.
Troubleshooting problems
for system controllers
(1) Troubleshooting problems for system controllers
(1) Incidental cause
(2) Faulty wiring of the transmission line for ME remote con-
troller
(3) When the address of ME remote controller is changed in
the middle of the operation
(4) ME remote controller failure
54
- chapter 7
All indoor units (IC) in the All ME remote controllers
same system are experi- (RC) are experiencing
encing problems.
Troubleshooting prob- Troubleshooting prob-
lems for all units (B) lems for all units (B)
Troubleshooting prob-
lems for all units (C)
Cause
problems.
&
Check method and remedy
1) Turn off the power source of the outdoor unit for 5
minutes or more, and turn it on again.
2) If not, check the causes (2) - (4).
HWE18240_GB