Error Code [6607] Error Source Address = Hydro Unit (Hu) - Mitsubishi Electric PUHY-M200YNW-A1 Service Handbook

[7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ]
7-8-10

Error Code [6607] Error Source Address = Hydro unit (HU)

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) Incidental cause
(2) When Hydro unit address is changed or modified during
operation.
(3) Faulty or disconnected transmission wiring of Hydro unit
(4) Faulty control board of Hydro unit
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- chapter 7
Cause Check method and remedy
1) Turn off the power to the outdoor unit and the
Hydro unit, leave them turned off for at least 5 min-
utes, and then turn them back on.
2) If the error is accidental, it will run normally. If not,
check the causes (2) - (4).
BS_07_E