Argo AT2045 User Manual

29
TROUBLESHOOTING
FLO
Flow Switch Alarm
Is ow switch installed?
N - Check control board jumper is in place and secure.
Tighten FLO screws if needed.
Y - System air locked - Purge system and add venting
as needed.
Y - Check that ow switch is functioning properly.
Conduct self test on ow switch (Consult manufactures
instructions).
LWC
Low Water Cutoff Alarm
Is LWCO Installed?
N - Check control board jumper is in place and secure.
Tighten LWC screws if needed.
Y - System air locked - Purge system, add venting as
needed.
Y - System low on water - Check water feed to boiler,
check for leaks. Repair as needed.
Y - check that LWCO is functioning properly. Conduct
self test on LWCO switch (Consult manufactures
instructions).
Control Display Dark/
Un-responsive
Is electrical power applied to unit?
Check Incoming power is between 197Vac and 240Vac
(197< IP <240Vac). If power outside range, contact
electrician to have power corrected.
Field Service circuit breakers tripped?
Check for loose or damaged wiring. Replace wiring if
damaged.
Check heating element resistance within 9-20Ω (Ohms).
Replace element if outside range.
AT boiler 15A breaker tripped?
Inspect control and all wiring for damage. Replace any
damaged components or wiring.
Inspect eld installed thermostat and wiring for
damage. Repair and replace as necessary.
Is control transformer functioning?
Check for 24Vac on R and C terminals of control board.
If less than 18Vac on R & C with primary side between
104 and 130Vac then replace transformer.
With power removed check control transformer primary
and secondary windings for open or short. If windings
are open or short, replace transformer.
With power removed check 5A fuse on control board. If
bad replace fuse.
Is wiring loose or damaged?
Inspect all thermostat wiring for damage loose
connections or damage. Replace wiring if necessary.
Control functions
correctly however does
not heat water.
Heating element(s) failed?
Check heating element resistance within 9-20Ω (Ohms).
Replace element if outside range.
AT boiler 40A breakers tripped?
Check for loose or damaged wiring. Replace wiring if
damaged.
Check heating element resistance within 9-20Ω (Ohms).
Replace element if outside range.
Check control board for damaged heat relay(s).
Check boiler pump is operational. Replace if necessary.

Argo AT2045 Specifications

General

Brand	Argo
Model	AT2045
Category	Boiler
Language	English