Owner's manual

ManualsBrandsL.B. White ManualsRadiators400 Tradesman Portable Forced Air

Three Times

Indicates ignition

failure.The ignition

control is in safety

lockout..

Is proper fuel

supplied to heater

inlet?

Connect proper

gas supply to

heater. Open all

gas shutoff valves.

Is proper gas

pressure supplied

to heater?

Provide proper gas

supply pressure to

heater. Refer to

dataplate. If LP gas is

used, ensure LP

container is full.

Is backflash

switch tripped?

Check

continuity

If switch is tripped,

determine cause.

Check for obstruction at

discharge outlet of heater,

and low voltage from power

supply, orn improper

oversized burner orifice.

Is Ignitor

properly

gapped?

Is proper

voltage

supplied to

gas valve?

Defective gas

valve.

Check igniter gap

Regap to .10 in.

Defective wires or

connections. If good,

replace ignition control.

Does ignitor

spark?

Is igniter high voltage

lead securely

connected?

Reposition

Igniter.

(See Service

Instructions)

Connect high

voltage lead

Five Times

If control module does not reset, then replace the it (Internal

board fault.)

If module resets, then have qualified electrician check power

source for power quality problems. (Frequency, line noise, line

spikes, loose connections, too small wire gauge.)

Flame sense related problems. Check for

cracked or dirty flame sensor, improperly

positioned sensor, or poor flame sense ground.

Four Times

Rapid On/Off

cycling of the

burner.

Does gas

solenoid valve open?

Problem

Is the heater

properly

grounded?

Ensure all

Grounds are

Connected.

Determine if ignitor receives high voltage:

-- Disconnect ignition lead from ignition control.

-- Position a screwdriver tip about 3/16 inch away

from ignition control where lead was connected .

-- WITH GAS OFF, start the heater.

-- If no spark is seen, replace the igntion control.

-- If spark is seen, reconnect igntion lead to control.

-- Disconnect the lead at the ignitor.

-- Hold the lead about 3/16 in. from a grounded

section of the heater.

-- WITH GAS OFF, start the heater.

-- If no spark is observed, replace the ignition lead.

-- If spark is observed, replace the ignitor.

Is ignitor gap

positioned

toward burner

orifice?

Yes