Mitsubishi Electric LGH-50RSDC-E1 Handbook page 14

(6) Trial operation function
This is a function for operating the Lossnay without external signals (contact signals). With this function, con-
necting condition of the AC power supply line and the wirings can be confi rmed. Also, the Lossnay can be
forced to operate in case of system down.
How to set
SA fan operation
EA fan operation
Operation mode
LED 11
Operation monitor output
(TM4 and )
(7) LED display
Small PCB (right)
LED
Unlit 1
LED 1 (red) Lit
Blinking
Unlit 1
LED 11 (green) Lit
Blinking
1 When one of LED 1 and LED 11 is blinking, the other one will be unlit.
2 In case multiple errors have occurred at the same time, each LED will blink simultaneously.
Turn on the trial operation switch SW 1-1.
Speed 1
Speed 1
Energy recovery ventilation, after 1 minute bypass ventilation
Lit
When SW 1-2 (Operation monitor output with delay function) is ON, or
SW 1-5 (Operation monitor output) is ON,
Monitor output : On (contact : close)
Display Condition
No power supplied
Power supplied
Error
Normal
In trial operation
Error
LED
LED 2 (red)
LED 3 (green)
─ 14 ─
Large PCB (left)
Display Condition
Unlit SA fan stopping
Lit SA fan running
Blinking Error
Unlit EA fan stopping
Lit EA fan running
Blinking Error