Error Code [6607] Error Source Address = Me Remote Controller - Mitsubishi Electric HP120TNU-A Service Handbook

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

Error Code [6607] Error Source Address = ME Remote 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)
Types of refrigerant sys-
tems
Grouped operation of mul-
Single refrigerant system
tiple refrigerant systems
Troubleshooting prob-
Troubleshooting problems
lems for ME remote con-
for ME remote controllers
Troubleshooting prob-
(1) Troubleshooting problems for ME remote controllers
(1) Incidental cause
(2) Faulty transmission wiring at IC unit side.
(3) Faulty wiring of the transmission line for ME remote con-
troller
(4) When the address of ME remote controller is changed in
the middle of the operation
(5) ME remote controller failure
54
- chapter 7
Types of indoor units experiencing
problems
Part of the indoor units
(IC) are experiencing
Troubleshooting prob-
lems for ME remote con-
trollers
&
lems for all units (A)
Cause
System controller (SC)
All indoor units (IC) in the
same system are experi-
problems. encing problems.
Troubleshooting prob-
lems for all units (B)
trollers
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) - (5).
All indoor units (IC) are
experiencing problems.
Troubleshooting prob-
lems for all units (B)
&
Troubleshooting prob-
lems for indoor units (B)
HWE18220_GB