Navien CH-180 Operation Manual page 41

Combination water heater operation
█
Basic Troubleshooting and Frequently
Asked Questions
Problem
Space Heating side
malfunction
(DHW)
Possible Cause(s)
Is the setting
temperature
too low?
Is there power to the
System, or is the
system
In stand-by?
Is the "24 hour" timer
set correctly?
Is the system running
for domestic hot water
(DHW)?
Is the filter on the
heating side
restricted?
Is the pre-heating
icon blinking on the
remote controller?
What to do
Use the center dial on the
remote controller to
raise the setting
temperature.
Make sure the power is
on, and plugged in to the
outlet with the correct
voltage. Tap "ON/OFF"
then tap the heating
button, and raise the
setting temperature.
Make sure the current
time setting is correct.
Then adjust the timer
settings to where the
system is desired to run.
When the unit is heating
for DHW, the heating
side does not work.
there is a standby time
between switching form
DHW and heating
(3 min).
Clean out filters that
belong to the heating
side.
When the unit is in "pre-
heating" mode the
heating side is placed
into stand by.
41