4-3 Circuit Test Point
LED1 (green)
• When blinking, there is an error with the Lossnay unit (number of blinks indicates the type of error).
• Blinks at 1 second intervals when starting.
• Lit during delayed start, normally off at other times.
LED2 (red)
• Blinking indicates M-NET communication error (number of blinks indicated the type of error).
• Lit when not connected to other M-NET units (registered).
Exhaust fan operation unit (combined)
Fuse (6.3 A/250 V)
Supply fan operation unit (combined)
Power supply
208 V to 230 V AC: up to 60 Hz
Transformer input
Damper motor
operation unit
208 V - 230 V AC
5 V DC
12 V DC
Transformer output
11 V to 20 V AC
GND
LED4 (red)
• lit when power is
supplied to circuit
12 V DC
Thermistor
(outdoor air)
Thermistor
(return air)
Damper position
detector
• during Lossnay
ventilation: 12 V DC
• during by-pass
ventilation: 0 V
LED6 (red)
• lit when power is
supplied to M-NET
M-NET transmission cable (shielded)
M-NET transmission cable
(PZ-52SF-E, MELANS, power supply unit
or City Multi)
Not in use
For external device
connection
During
operation: 0
Ω
When
stopped: OPEN
During error: 0
Ω
Normal: OPEN
Remote control switch (PZ-41SLB-E) and
Lossnay spanning transmission cable
9 V to 15 V DC
Exhaust fan operation unit
208 V to 230 V AC: up to 60 Hz
Supply fan operation unit
208 V to 230 V AC: up to 60 Hz
Extra
high
High Low
Extra
high
High Low
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