Mitsubishi Heavy Industries SCM71ZS-W User Manual

-
102
-
'19 • SCM-SM-276
(iii) Display sequence of error codes or inspection indicator lamps
■
Occurrence of one kind of error
Displays are shown respectively according to errors.
■
Occurrence of plural kinds of error
Section Category of display
Error code on remote
control
• Displays the error of higher priority (When plural errors are persisting)
• Displays the present errors. (When a new error has occurred after the former error was reset.)
Red LED on indoor unit
control PCB
Red LED on outdoor unit
main PCB
■
Error detecting timing
Section Error description Error code Error detecting timing
Indoor
Drain trouble (Float switch
activated)
Whenever float switch is activated after 30 second had past since
power ON.
Communication error at
initial operation
“
WAIT
”
No communication between indoor and outdoor units is
established at initial operation.
Remote control
communication circuit error
Communication between indoor unit and remote control is
interrupted for mote than 2 minutes continuously after initial
communication was established.
Communication error during
operation
Communication between indoor and outdoor units is interrupted
for mote than 2 minutes continuously after initial communication
was established.
Excessive number of
connected indoor units by
controlling with one remote
control
Whenever excessively connected indoor units is detected after
power ON.
Return air temperature sensor
anomaly
-50°C or lower is detected for 5 seconds continuously within 60
minutes after initial detection of this anomalous temperature.
Indoor heat exchanger
temperature sensor anomaly
-50°C or lower is detected for 5 seconds continuously within 60
minutes after initial detection of this anomalous temperature.
Or 70°C or higher is detected for 5 seconds continuously.
Outdoor
Outdoor air temperature
sensor anomaly
-55°C or lower is detected for 5 seconds continuously 3 times
within 40 minutes after initial detection of this anomalous sensor.
Or -55°C or higher is detected for 5 seconds continuously within
20 seconds after power ON.
Outdoor heat exchanger
temperature sensor anomaly
-55°C or lower is detected for 5 seconds continuously 3 times
within 40 minutes after initial detection of this anomalous sensor.
Or -55°C or lower is detected for 5 seconds continuously within
20 seconds after power ON.
Discharge pipe temperature
sensor anomaly
-25°C or lower is detected for 5 seconds continuously 3 times
within 40 minutes after initial detection of this anomalous sensor.
Suction pipe temperature
sensor anomaly
-55°C or lower is detected for 5 seconds continuously 3 times
within 40 minutes after initial detection of this anomalous sensor.
Or -55°C or higher is detected for 5 seconds continuously within
20 seconds after power ON.

Mitsubishi Heavy Industries SCM71ZS-W Specifications

General

Brand	Mitsubishi Heavy Industries
Model	SCM71ZS-W
Category	Air Conditioner
Language	English