Name: Navien NHB-150
Brand: Navien
Rating: 5 (1 reviews)

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NHB Service Manual 77

Version 1.0

4.9.13 Dual Venturi

Part Check Point

Function

Controls the amount of mixed gas to modulate heating input.

It uses synchronous motor to control the amount of mixed gas by stage 1 and 2.

Failure Event

1. Blade not closing

2. Blade not opening

Effects

1. Frequent On / Off due to excessive heat

2. Fail to reach the set temperature due to lack of heat

Error Code E060

Diagnostic

Voltage check : Checking the voltage of synchronous motor

(Approximately after 2 sec of Open / Close operation, the motor turns off.)

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