ESA 125T, Owner'S Manual

Page: 7 / 21

113170-01E 7
www.desatech.com
OPERATION
Continued
RL, RE AND PKHD SERIES MODELS
ONLY
Temperature Display
These models are equipped with a digital tem-
perature display. The temperature being shown
represents the air nearest to the control cover. The
temperature of the air in surrounding areas may
be much different from the temperature being
displayed. The display may show [ - - ] when the
thermostat control or temperature sensor are dis-
connected from the ignition control or if they are
or damaged. If this occurs, the safety control will
continue to operate as before, however, the unit
will not cycle off during operation. See Figure 4.
Lighted ON/OFF
Switch
Thermostat
Control
Temperature
Display
LED Indicator Lights
These models are equipped with LED lights in order
to help monitor your heater and to help diagnose
any potential problems associated with your heater.
Make sure you have read all of the instructions and
see
Troubleshooting , page 8, before attempting to
rectify any problems with your heater.
WARNING: Never service
heater while it is plugged in,
operating or hot. Severe burns
and electrical shock can occur.
LOGIC ENHANCED IGNITION
These models have an electronically controlled
ignition system that is able to detect problems
during startup and is able to apply an automatic
“choke” to increase the likelihood of ignition. If
the heater does not ignite within the first second
the motor will slow down momentarily. If your
heater does not light after the first “choke” it will
repeat once. If the heater does not ignite after the
second “choke” it will shutdown and remain in
shutdown mode until the unit is reset. Please refer
to
Troubleshooting , page 8 in order to properly
diagnose the problem.
Figure 4 - Control Cover with
Temperature Display
Ignitor - indicates a problem with
the ignitor and can be caused by
a damaged or broken ignitor or an
ignitor that is wired incorrectly.
Flame - will illuminate after heater
is shut down due to problems
associated with the
flame or the
photocell that monitors the flame.
3
4
2
5
Temperature
Temperatura
1
6
LO Thermostat
Termostato
HI
112935-01
Temperature
Display
Voltage - monitors line voltage during
normal operation and indicates
improper line voltage. If line voltage
falls below 108V or above 132V the
heater will shut down.
Start/Run - blinks during
“preheat” for 10-15 seconds
before ignition and will stay on
during normal operation.
Figure 5 - LED Indicator Lights