Mitsubishi Heavy Industries SRF-ZMX-S User Manual

Term
Explanation
Service Mode
The service mode is the mode where service data are displayed by flashing lights when the operations
described below are performed with the indoor controller
Service Data
These are the contents of error displays and protective stops which occurred I the past in the system.
Error display contents and protective stop data from past anomalous operations are saved in the indoor
unit controller's non-volatile memory. There are two types of data, self-diagnosis data and stop data.
Self-Diagnosis
Data
(Error code)
These are the data which display error display (self-diagnosis display) occurred in an indoor unit. Data
are recorded for up to 5 previous occurrences. Data which is older than the 5th previous occurrence
are erased. In addition, data on the temperature of each sensor are recorded when trouble occurs, so
more detailed information can be checked.
Stop Data
(Stop code)
These are the data which display the reason by which a stop occurred when the system performed
protective stops, etc. in the past. If stop data alone are generated, the system restarts automatically.
Data older than the 10th previous occasion are erased.
(Important) In cases where transient stop data only are generated, the system may still be normal.
However, if the same protective stop occurs frequently (3 or more times), it could lead to customer
complaints
Service mode display procedure
Hi-Wall Mounted Inverter Split Systems - SERVICE MODE – SRK (R410A Models only)
Start
Turn off the A/C's power, and then
wait one minute or longer.
Turn the A/C \'s power back on while
pressing the unit ON/OFF button.
Did a buzzer located in
the indoor unit sound?
NO (*1)
*1: If the buzzer does not sound no matter
how many times you repeat the
operation, the unit ON/OFF button may
Within 1 minute after turning the A/C back on, signals
will be sent from the remote control (*2)
*2: Set the remote controls settings on
"cooling operation", "fan speed MED" and
"Set temperature: 21C."
Count the number of times the RUN and TIMER lights flash (*3),
and check the contents of the error, etc. from the table.
Is other data displayed?
NO
Turn off the A/C's power to terminate the
service mode.
Change the remote controls settings based
on the instructions in the table (*4)

Mitsubishi Heavy Industries SRF-ZMX-S Specifications

General

Brand	Mitsubishi Heavy Industries
Model	SRF-ZMX-S
Category	Air Conditioner
Language	English