Navien CH-180, Service Manual

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84
Error conditions and Symptoms Analysis
5.13. 13Error
Error Description
The system receives change of pressure from the water pressure sensor. If no
change of pressure is made for 7 seconds after starting of the pump, the system
stops/restarts the pump 3 times. If the pressure is remained unchanged, the system
determines a trouble of the pump, and displays the 13E (manually cancelled) error
message on the remote controller.
13E
Pump error
Check
items
Check if the pump works normally.
If the pressure remains unchanged after the pump is started, replace the pressure
sensor.
Pressure sensor error.
The pump can be stuck from time to time due to debris in the heating water.
Press the reset button,
is the pump normal?
Yes
No
During pump operating,
does water pressure increase
higher than 3.0 Psi.
Check connector(CN18)
or replace pump
Yes
No
Normal state
Repeat pump on and off
N times, if N < 5?
Remove air from pipe No
Yes
© Navien Ameri c a I n c . 20 1 0 CH series servi c e Manua l Version 1 .0