Wayne P250 - Service Information

64659-001 REV. A 07/06/18
24
Symptom
Lights
Possible
Corrections
Flash
T-Input
Valve
Blower
24V/Cal
Appliance runs, oven
temperature at or
near t-stat set point,
slowly increases
above set point over
time
Flash
On
On
On
On
1. Verify proper gas orifice size for
desired firing rate and type of gas.
2. Check low pressure setting of
modulating gas valve; adjust as
necessary.
Appliance runs,
temperature at t-
stat set point slowly
decreases when
appliance is loaded
Flash
On
On
On
On
1. Verify proper gas orifice size for
desired firing rate and type of gas.
2. Check high pressure setting of
modulating gas valve; adjust as
necessary.
Appliance runs,
temperature cycling
above and below t-
stat set point by
approximately +/-
5
o
F
Flash
On
On
or
Flash
On
On
1. This is normal operation for
iHEAT control with V53 and later
software. A flashing Valve light
indicates the burner has been
turned off to maintain appliance
temperature.
2. Verify proper dip-switch
position for appliance and gas
type.
3. Check low pressure setting of
manual gas valve; adjust as
necessary.
Appliance runs and
iHEAT system is
running
Flash
Off
Flash
On
Flash
System is in low gas pressure
calibration mode. Refer to
Modulating Valve section.
SERVICE INFORMATION