Installation manual

13
Burner lights but heater
stays in High Fire
Is there a short circuit in the
Remote Temperature
Selector or wiring?
Is there an open circuit in
the Discharge Air Sensor
or wiring?
Is Plunger in the Modulating
Valve jammed? Inspect and
clean. It should operate
freely in the sleeve.
Install
Jumper
Is there a jumper between
terminals 2 & 3 on the
Maxitrol Amplifier?
Repair circuit or
replace the
Discharge Air
Sensor
Repair short or replace
Temperature Selector
Foreign object holding
valve open. Remove
bottom plate and inspect
valve and seat. Clean or
replace valve.
Nothing Happens
Activate
Reset & measure FLA
on motor. Is it higher
than rating?
Is Fire System
Installed & Armed?
Is Overload tripped
on starter?
Adjust or
change
Pulley
Is limit switch on
Motorized Damper
closed?
Adjust or Replace
Is Freeze-Stat
open?
Adjust or Replace
Yes
Yes
No
Yes
No
No
No
No
No
Yes
Yes
Yes
No
No