CSA RA 350 - Run (Green Power On Light Is Lit; Green System Ready Light Is Not Lit)

Form I-RA/D 350/500, P/N 131090R12, Page 41
Troubleshooting
Continued
Chart No. 1 - Thermostat calling for heat; Burn-
er motor never attempts to run.
Determine and correct the reason
the backflow sensor was activated.
Once the problem has been
corrected, push the manual reset
button on the backflow sensor and
follow the instructions to relight the
heater.
Replace the oil
preheater high limit.
YES
NO
Size 350 - Check for
line voltage across Terminals 15
and 11. Size 500 - Check for line voltage at
the oil heater temperature control and high
limit control connection and
Terminal 11. Is voltage
read?
Is inlet nozzle
adapter warm to the
touch?
Check for line
voltage across Terminals
17 and 2. Is voltage
read?
Check for line
voltage across Terminals
16 and 2. Is voltage
read?
Check for line
voltage across Terminals
4 and 2. Is voltage
read?
Measure the resistance
across the F-F
terminals on the
ignition controller.
Is the
resistance zero?
Correct
short circuit.
Is the
resistance greater than
1500 ohms?
Clean cell face
and seat firmly
into holder.
Is resistance
greater than 1500
ohms?
Is the overfire
draft correct?
Is the CO2
correct?
Replace
the cad cell.
Adjust for
proper CO2.
Adjust
barometric
damper.
Cad cell and
ignition controller
are OK.
Replace fan and
limit control
assembly.
Replace nozzle
low oil
temperature limit.
Check for
line voltage across "Tan"
oil heater wires and Terminal
11. Is voltage read?
Check continuity
of 650 watt (Size 350) or
770 watt (Size 500) element. Is
there sufficient ohms?
Replace oil heater
temperature control
(pre-heater).
Replace oil
heating element
(pre-heater).
Replace oil heater
low temperature
limit (pre-heater).
Check for
line voltage across 14
and 11. Is voltage
read?
Check
for continuity of 30
watt heating elements. Is
continuity read?
Is cold
air discharging
from burner
tube?
Add draft
inducer
Replace 30 watt
heating
elements.
Replace nozzle
temperature
control.
Is the oil
preheater hot to the
touch?
Replace the oil
preheater
temperature control.
Check for line
voltage at the manual
disconnect switch. Is
voltage read?
Replace manual
disconnect
(on/off) switch.
Turn on or correct
supply. Wait 15
minutes for heater to
warm up.
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Does the backflow
sensor need reset?
* Applies to Size 500 mfgd beginning 1/2005. For a
Size 500 mfgd before 1/2005, check for line
voltage across Terminals 1 and 2
for at least 15 minutes.
Has there been
line voltage across
Terminals 1 and 2 (Size 350) or
Terminals 1 and 10 (Size 500*) for
at least 15 minutes?
FIRST, turn on the
main power to the
unit at the discon-
nect switch and wait
at least 15 minutes
before proceeding.
• If GREEN “sys-
tem ready” light
is NOT LIT, con-
tinue with the
troubleshooting
guide in Chart
No. 1, left.
• If GREEN “sys-
tem ready” light
is “ON” skip to
Chart No. 2, page
42.
Refer to illustrations on
page 39 or 40 and 42.