Navien NHB-055, Руководство по обслуживанию

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58 NHB Service Manual Version 1.0
Component Test Performed Display Method
Fan
Gradually increase / decrease the speed of
the fan motor starting from 0 RPM to full
speed and back down to 0 RPM
The current APS value and the current RPM value are repeatedly
displayed at intervals of 2 seconds.
Boiler Pump
Cycles the pump 10 seconds ON and 5
seconds OFF five times. (Repeats five times
for a total of 75 seconds)
Whenever the [+], [-] button is pressed, the condition is toggled as
On -> Off or Off -> On
System Pump
In entering Test, it becomes System Pump
On status and wh], [-] buttons are
pressed, the status changes to On -> Off or
Off -> On
Whenever the [+], [-] button is pressed, the condition is toggled as
On -> Off or Off -> On
Hot Water Pump
In entering Test, it becomes Pump On status
and wh], [-] buttons are pressed, the
status changes to On -> Off or Off -> On
Whenever the [+], [-] button is pressed, the condition is toggled as
On -> Off or Off -> On
Dual Venturi
Dual Venturi will be turned On upon entering
<Test mode> and pressing the [+], [-] button
each time converts the state from On -> Off
or Off -> On
Whenever the [+], [-] button is pressed, the condition is toggled as
On -> Off or Off -> On
* Error Check Operation will return to Normal Operation condition after automatic test when selecting each operation mode (Boiler Pump, System Pump, Hot
Water Pump and Dual Venturi will be manually controlled)