Mitsubishi Electric CRHV-P600YA-HPB Service Handbook page 131

[ IX Troubleshooting ]
Error
code *1
Error type
(PCB *2)
Multiple A d d e r s s s e t t n i g
7105
system
error
Incompatible combination of units
7130
No.-of-connected-unit setting is incorrect.
7102
Communication error between the main and sub units
6500
Communication error between the MAIN and SUB
circuits
6600 Transmission line power supply PCB fault
Communication error between the main and sub units
6602
(Simple multiple unit control mode)
6603
6606
6607
6608
*1: The codes in the parentheses in the "Error code" column indicate error detail codes.
*2: If an error occurs, error codes shown above will appear in the 4-digit digital display on the PCB.
*3: Definition of symbols in the "Error reset" column.
: Errors that can be reset regardless of the switch settings
: Errors that can be reset if the remote reset setting on the unit is set to "Enable" (factory setting)
Errors that cannot be reset if the remote reset setting on the unit is set to "Disable"
: Errors that cannot be reset
: Errors that will be automatically cancelled once its cause is removed
*4: This error code will appear when multiple errors occur that are reset in different ways and when one or more of these errors have not been reset. This error can be
reset by turning off and then back on the unit's power.
*5: Power failure will be detected as an error only when the "Automatic recovery after power failure" setting on the unit is set to "Disable."
(The default setting for the "Automatic recovery after power failure" setting is "Enable.")
*6: Before resetting this error, remove its causes. Resuming operation without removing the causes of heat exchanger freeze up w
Under the standard pipe connection of the heat source. (Counter flow)
*7:
HWE1312A
(Installation/Setting error)
e r r r o A d d e r s s
(Non-consecutive address)
Different types of units are connected to
the same system.
No.-of-connected-unit setting is
incorrect (Main unit).
Communication error due to external
noise interference
Cause
s e t t n i g e r r r o
• Broken wiring to the transmission power
supply circuit board (between the main
and sub units)
• Transmission power supply PCB
communication circuit fault
- 124 -
Error reset *3
Unit
Cause
side
(Parts problems) (PCB)
SWS1
ill cause heat exchanger damage.
Remote
Operation
SW
GB