Mitsubishi Electric PUHY-P1000, Service Handbook

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[7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ]
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HWE14040 GB
7-8-10 Error Code [6607] Error Source Address = LOSSNAY (LC)
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
(1) Troubleshooting problems for LOSSNAY units
Error display
ME remote controller (RC), MA remote controller (MA)
Types of refrigerant systems
Single refrigerant system
Grouped operation of multiple
refrigerant systems
Troubleshooting problems for
LOSSNAY units
Troubleshooting problems for
LOSSNAY units
&
Troubleshooting problems for
all units (A)
Cause Check method and remedy
(1) Incidental cause 1) Turn off the power source of LOSSNAY and turn it
on again.
(2) The power source of LOSSNAY has been shut off. 2) If the error is accidental, it will run normally.
If not, check the causes (2) - (6).
(3) When the address of LOSSNAY is changed in the middle
of the operation
(4) Faulty or disconnected transmission wiring of LOSSNAY
(5) Disconnected connector (CN1) on LOSSNAY
(6) Controller failure of LOSSNAY