Troubleshooting by Remote Controller
Si33-105
156
Troubleshooting R407C PLUS Series Heat Recovery System
In case of the malfunction with the shaded error code, the unit still operates. However, be sure
to have it inspected and repaired and as soon as possible.
Note:
Refer service manual Si71-001 for more detail of heat reclaim ventilation troubleshooting.
Malfunction
code
Operation
lamp
Inspection
display
Unit No.
Malfunction contents
Page
Refered
Centralized
Control
and
Schedule
Timer
UE
9
9
9
Malfunction of transmission between central
remote controller and indoor unit
M1
8
or
9
9
9
PC board defect
M8
8
or
9
9
9
Malfunction of transmission between optional
controllers for centralized control
MA
8
or
9
9
9
Improper combination of optional controllers for
centralized control
MC
8
or
9
9
9
Address duplication, improper setting
Heat
Reclaim
Ventilation
60
8
7
9
Overall alarm
—
9
9
9
Overall malfunction
—
64
8
7
9
Inside air thermistor error
—
65
8
7
9
Outside air thermistor error
—
6A
8
7
9
Damper system alarm
—
6A
9
9
9
Damper thermistor error
—
U5
9
9
9
Data transmission error between LCD remote
controller and main unit
—
U5
7
9
7
LCD remote controller connection error
—
U8
7
9
7
Data transmission error between master-slave
LCD remote controllers
—
UA
7
9
7
LCD remote controller connection error (no remote
controller for air conditioner in air conditioner
group)
—
UC
8
8
8
Overlapping central control address
—
UE
9
9
9
Transmission error between the unit and
centralized controller
—
Summary of Contents for R407C PLUS
Page 1: ...System R407C PLUS Series Heat Recovery System Si33 105 Service Manual ...
Page 11: ...Introduction Si33 105 x ...
Page 41: ...Specifications Si33 105 30 Specifications R407C PLUS Series Heat Recovery System ...
Page 147: ...Test Operation Si33 105 136 Test Operation R407C PLUS Series Heat Recovery System ...
Page 263: ...Si33 105 iv Index ...