Basic Trouble Shooting
MANUAL - ES700B
Rev November 2019
Copyright © 2019 Equipment Source Inc.
Page 21 of 30
6
Basic Trouble Shooting
WARNING
Some of the following trouble shooting operations should only be completed by a trained technician. Do
not attempt to open electrical panels or service the burner unless you are a trained technician.
Use the following troubleshooting guidelines to resolve problems that may encountered while operating
the ES700B heater. Contact your service representative or refer to the attached operations manual
specific to the burner, engine or fan if the problem cannot be resolved using this guide.
6.1
Burner Trouble Shooting
ES700s use Carlin 301CRD burners with the 60200 controller. The controller has a pre-purge of 30
seconds and a post-purge of 5 minutes. There is a low voltage continuity loop through the burner
safeties to the thermostat terminals on the controller (the “TT” terminals on the burner controller). If
any one of the safeties breaks continuity, the burner will not start. This greatly simplifies trouble
shooting the burner.
Table 3. Burner Safeties/Controls
Safety
Purpose
Heat exchanger over temperature
NOTE: This safety must be manually reset.
Air blockage safety: shuts down burner if the
heat exchanger working air temperature exceeds
350F [180C].
Pressure safety
Shuts down burner if the main blower fan is not
running
Enclosure over temperature
Shuts down burner if the enclosure air
temperature exceeds 120F [50C]
Outlet air temperature control
Maintains output temperature between 160 to
220F [70 to 105C]
