T
wo T
imes
Indicates Lack
of Air Proving in
Fan Section of
Unit.
Flash Pattern
Begins W
ithin
90 Seconds
After Condition
Occurs.
Y
es.
Do Air Proving Switch
Cont
act
s Close?
Check Continuity
.
Ye
s
Ye
s
Rep
air or
Replace.
Is Fan Binding?
No
No
Is Fan Loose On
Motor Shaf
t?
No
Ye
s
T
ighten Fan Blade Set Screw
Is Proper
V
olt
age Supplied
to Fan Motor?
No
Ye
s
Defective Motor or Cap
acitor
Replace Motor or
Cap
acitor
Is
Ignition Control
Module Sending Proper
V
olt
age to
Switch?
Is
Ignition Module
Receiving Proper
V
olt
age?
No
No
Is
Proper V
olt
age
Supplied to Heater
Power Cord?
Check for Good
Electrical Cnnections.
If Good, Replace Air
Proving Switch.
Ye
s
Defective Ignition Control
Module.Replace .
Ye
s
Defective Wiring or
Connections to Motor
Ye
s
Rep
air or Replace
Wiring and Connections
No
Provide Proper V
olt
age,
Check Electrical Supply
,
Circuit Breakers, Etc.
20
Is Switch Binding?
Rep
air
.
TRADESMAN UL
TRA
HEA
TER
Problem
Содержание CP155
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