Mitsubishi Electric CRHV-P600YA-HPB, Service Handbook

Page: 131 / 170

[
IX
Troubleshooting ]
- 124 -
HWE1312A GB
*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
*7: Under the standard pipe connection of the heat source. (Counter flow)
ill cause heat exchanger damage.
7105
Multiple
system
error r o r r e g n i t t e s s s e r d d A r o r r e g n i t t e s s s e r d d A
(Non-consecutive address)
7130
Incompatible combination of units Different types of units are connected to
the same system.
7102
No.-of-connected-unit setting is incorrect. No.-of-connected-unit setting is
incorrect (Main unit).
6500
Communication error between the main and sub units
Communication error between the MAIN and SUB
circuits
6600
Transmission line power supply PCB fault
Communication error between the main and sub units
(Simple multiple unit control mode) Communication error due to external
noise interference • Broken wiring to the transmission power
supply circuit board (between the main
and sub units)
• Transmission power supply PCB
communication circuit fault
6602
6603
6606
6607
6608
Error
code *1
(PCB *2)
Error type
Cause
(Installation/Setting error)
Cause
(Parts problems)
Error reset *3
Unit
side
(PCB)
Remote
SWS1
Operation
SW