32Error - Navien NP-180 Service Manual

5.16. 32Error

Error occurrence conditions and check items.
Error
32E
If an error (open: -14
Direct water
the system displays the 32E (cleared automatically) error message on the room
temperature
controller and the PCB. The boiler maintains the Safety-Shutdown status.
sensor open
1. Check if the cold water temperature sensor is open and if the connector is
connected properly.
Check items 2. Check the defect of the direct temperature sensor.
3. Defective PCB
4. Check dipswitch settings(Non-A/A Model)
Check method
Error
Defective
temperature
sensor connector
Defective
sensor
Temperature
Defective
Other trouble
©Navien America Inc. 2010
Description
or lower) in the cold water temperature sensor is detected,
Cause
Check if the cold water temperature sensor is open and
if the connector is connected properly.
Measure the temperature sensor resistance.
(Defective if it is 30
sensor
Replace the temperature sensor if the resistance is abnormal.
If the trouble continues despite the checking of above items,
replace the PCB.
PCB
<Heat exchanger input temperature sensor /
connector, Black 2P>
102
NR/NP series service Manual
Check method
or higher)
<Check if the hot water temperature sensor is open>
Error type : MΩ Open
Version 2.0