56
Error conditions and check items
5.3. 01Error
Error
01E
Boiling
Check items
Description
In order to prevent boiling of the heat exchanger, if the heating water temperature
of 208
ı
(98
ç
) or higher is sensed continuously for 15 seconds, the thermostat
displays the error message 01E (manually cancelled), and the boiler becomes
Lock-Out, performing post-purge. The system stops the post-purge process if the
heating (or returned) water temperature becomes 167
ı
(75
ç
or lower.
1. Check the circulation pump operating status.
2. Check the 3-way valve operating status.
3. Check if the heating strainer is clogged.
4. Check if the main heat exchanger or the hot water heat exchanger is
clogged.
5. Check the heating inlet/outlet valve and distributor room valve.
6. Check the heating outlet temperature sensor.
7. Check the PCB DIP S/W capacity setting.
8. Check if the PCB works properly.
Is the hot water thermistor
normal?
Yes
No
Check unit
Replace hot water thermistor
Resistance between two red wires of CN 13 is from
0.8 to 20k ohm at normal condition
Caution: Before measuring resistance of the
thermistor, remove the connector from the PCB.
©
Navien
Ameri
c
a
I
n
c
.
20
1
0
CH
series
servi
c
e
Manua
l
Version
1
.0
Summary of Contents for CH-180
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Page 31: ...29 4 4 Wiring Diagram Navien America Inc 2010 CH series service Manual Version 1 0...
Page 143: ...Navien America Inc 2010 CH series service Manual 141 Version 1 0 9 2 Burner Disassemble G...
Page 146: ...Navien America Inc 2010 CH series service Manual 144 Version 1 0 9 3 Water Way Disassemble...
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