Fan Trouble Shooting - ESI ES700B Manual

Basic Trouble Shooting
Table 4. Burner Trouble Shooting Guide
Problem
Burner cycling (frequently
starting and stopping during
normal operation)
Red LED is on
Amber LED is blinking
Red and Amber LEDs are off
but the burner fails to start
NOTE: Fan must be running for
burner to start

6.2 Fan Trouble Shooting

Table 5. Fan Trouble Shooting Guide
Problem
Motor overload trips
Motor overload repeatedly
trips
Fan belt wears quickly
Rev November 2019
Copyright © 2019 Equipment Source Inc.
Solution
Check for flow restrictions in the inlet or outlet ducts

Reduce duct lengths or increase duct diameters

Reduce the firing rate

The controller has been locked out because of a flame, fuel or

controller failure. Press the reset button for one second to
reset controller.
If the burner begins running again but the fuel pressure gauge

fluctuates, check fuel level and/or check for vacuum leaks in the
pickup tubes.
If the LED immediately returns to red, the controller may have

failed. Replace with a Carlin 60200 controller.
Momentarily disconnect one of the yellow wires connected to

the "FF" terminals on the controller.
If the amber light stays on, replace the controller.

Reset the reset the heat exchanger over-temperature safety.

If resetting fails, test the control loop connected to the TT

terminals by disconnecting one wire and testing with an
Ohmmeter while the main fan is running and the burner switch
is on.
If continuity in the circuit is broken, check sensors and wiring.

If continuity in the control circuit is OK, check the burner circuit

breaker.
Check power wiring and voltage if necessary.

Solution
Reset motor overload and continue operation

Check and grease motor and fan bearings. Replace

bearings/motor if worn or seized
Check fan belt alignment

Replace motor overload heaters in the motor starter box

Check belt alignment and tension

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MANUAL - ES700B