Navien CH-180, Service Manual, Page: 45 / 155

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4.6.11. Main Gas Valve
Navien Part No.
Function
Check Point BH0901018A Q
Failure Event
1. Gas leak from the valves.
2. Unable to open/close (main and solenoid gas valve)
3. Unable to modulate the gas flow (proportional gas valve)
Effects
Error Code
E003, E012, E035, E048
Diagnostic
Color /
Number of wires
1. Brown - brown : ON – DC83 ~ 120 V, OFF – 0 V
2. Yellow - yellow : ON – DC83 ~ 120 V, OFF – 0 V
3. Red – red : ON – DC83 ~ 120 V, OFF – 0 V
1. To control the amount of supply gas by electronically following the main
PCB board.
2. To maximize combustion, main gas valve harmonized with GPS.
3. When some disorders occur for the inadequate combustion, it shuts off
the gas valve automatically and prevents unsafe situations.
1. Gas leak from the unit.
2. No flames.
3. No operation of the unit.
4. Excess carbon monoxide emissions.
1. Visual inspection: Connection and/or breakage of wires.
“clunk” sounds from the gas valves opening.
2. Voltage check: Check range of voltage shown below.
ڤک
ڮڱڌ ڮڱڍ
ڪڰگ
ګڱ
ڶڢڼێٻڡۇۊےٻڟۄڼۂۍڼۈڸ
© Navien Ameri c a I n c . 20 1 0 CH series servi c e Manua l Version 1 .0