Argo AT1226 Manual de instalación descargar pdf (Pagina 24)

TROUBLESHOOTING - FLOWCHART#1

Green T-T indicator LED is

on; there is a call for heat.

Verify the boiler control

board switch is on.

Verify 120vac is present at

the L-N terminals on the

printed circuit board labeled

“120vac Input.”

Replace control board.

UNITS WITH POWER

BLOCKS

Verify that the ceramic fuse

is good. If fuse is blown,

replace it with a new one.

UNITS WITH CIRCUIT

BREAKERS

Verify that the 15amp/

120vac circuit breaker is on.

If breaker is off, turn it on.

Verify that the thermostat

is operational and calling

for heat. Disconnect TT/TT

wires from boiler control

board and replace with a

jumper if necessary. The

T-T indicator LED should

come on with the jumper

installed.

Lights come on with jumper

and elements then energize

Replace circuit breaker or

power block, depending

on type of boiler.

Check service at main load

center.

Verify that 240vac is pres-

ent across L1 and L2.

LED light/boiler off

with jumper installed

120vac not present

120vac

present

240vac not present240vac present

Yes

Is audible alarm sounding

and red fault LED ashing?

Yes (see Flowchart #3)

No (See Flowchart#2)

! !

WARNING

Due to exposure to potentially dangerous voltages, troubleshooting should be performed by

a qualied installer or service agency only. Failure to do so could result in property damage,

personal injury, or loss of life.

Potentially bad thermo-

stat. Consult thermostat

manufacturer’s manual or

replace thermostat.

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Argo AT1226 Manual de instalación Pagina 24

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