V-33
C
ONTROL
S
YSTEMS
❈ Refer to the ERV wired remote control installation manual for more information.
When use the “2-Remote controller”, one remote controller must be
MASTER, and the other must be SLAVE.
• MASTER : Set the switch to 0
• SLAVE : Set the switch to 1
❈ Except for the case “2-Remote control”, ERV wired remote controller must be set to be Master.
Master/Slave setting switch
Error code
Error code Explanation Classifications
Indoor temperature sensor (Short/Open)
121
Sensor error
Fan error
Others
Communication error
Outdoor temperature sensor (Short/Open)
221
Supply air fan motor error
561
Tracking error of MASTER ventilator (After 5 times of tracking, SLAVE
ventilators cannot be detected.)
201
System failure by communication error after tracking
202
Communication error by installing COM1 Dual MASTER
652
CO
2
sensor (Short/Open)
139
Exhaust air fan motor error
562
Display errors occurred in the ERV and/or ERV remote controller.
❈ When a number of indoor units are controlled in group by a ERV remote controller:
- When an error occurs in some ERVs : Display the error code and, normal operation for other ERVs.
- When an error occurs in all ERVs : Display the error code for the ERV with the earliest Main address.
Communication error between the wired remote control and the ventilator
(When the communication is blocked for 3 minutes)
601
COM1/COM2 cross installation error
606
EEPROM error
162
Damper error (When there is no switch input for 100 seconds while monitoring
the damper)
654
05-1_control systems(002~045) 3/15/08 4:09 Page 33
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