Troubleshooting (continued)

Symptom

Possible Cause

Corrective Action

 

 

 

 

 

 

A. A shorted or loose connection in flame

Verify all connections to wiring diagram in manual. Verify

 

4. Pilot lights but contin-

sensing rod.

connections underneath pilot assembly are tight. Verify

 

ues to spark, and main

 

flame sense or igniter wires are not grounding out to metal

 

burner will not ignite.

 

chassis, pilot burner, pilot enclosure or screen if present, or

 

(If the pilot continues

 

any other metal object.

 

to spark after the

 

 

 

B. Poor flame rectification or contaminated

With fixed glass assembly in place, verify that flame is en-

 

pilot flame has been lit,

 

flame sensing rod.

gulfing flame sensing rod on left side of pilot hood. Flame

 

flame rectification has

 

 

sensing rod should glow shortly after ignition. With a multi-

 

not occurred.)

 

 

 

meter, verify that current in series between module and

 

 

 

 

 

 

sense lead is at least 0.14 microamps. Verify correct pilot

 

 

 

orifice is installed and gas inlet is set to pressure specifi-

 

 

cations. Polish flame sensing rod with fine steel wool to

 

 

remove any contaminants that may have accumulated on

 

 

 

flame sensing rod.

 

 

 

 

 

 

C. Module is not grounded.

Verify module is securely grounded to metal chassis of ap-

 

 

 

pliance. Verify that wire harness is firmly connected to the

 

 

 

module.

 

 

 

 

 

 

D. Damaged pilot assembly or contami-

Verify that ceramic insulator around the flame sensing rod

 

 

nated flame sensing rod.

is not cracked, damaged, or loose. Verify connection from

 

 

 

flame sensing rod to white sensor wire. Polish flame sens-

 

 

ing rod with fine steel wool to remove any contaminants

 

 

that may have accumulated on flame sensing rod. Verify

 

 

 

continuity with a multi-meter with ohms set at lowest range.

 

 

 

Replace pilot if any damage is detected.

 

 

 

 

 

58

Heat & Glo • ESC-42ST2146-900 Rev. o • 5/12

Page 58
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Heat & Glo LifeStyle ESC-42ST owner manual Troubleshooting