19
Operating Instructions and Owner’s Manual
Enerco | Heatstar ER2STG Tube Series Heater
Burner Does Not
1. Check ground wire continuity.
Stay Lit
: 2. Check burner internal wiring for reversed
leads.
3. Check insulation on the igniter leads.
4. Clean or replace flame sensor.
5. Replace module if necessary.
IGNITION MODULE LED Status
The Heatstar ER2STG series Tube Heater is equipped with a Ignition
module. This ignition module has a built-in diagnostic program,
which will assist in troubleshooting in the event of a valve-related
problem. The LED or (Light Emitting Diode) is located on the ignition
module as shown in diagram below. The LED status indications are
listed below to help with the troubleshooting.
FIGURE 19:
Off
No power to the control
ON
Control Fault
1-Flashes
Airflow Fault
2--Flashes
Flame Sense Fault
3-Flashes
Ignition Lockout.
Troubleshooting
CAUTION: Before opening the Heatstar
ER2STG burner door for any type of service, be
sure the gas supply has been shut off at the
heater and the electrical cord from the burner
box has been unplugged.
Blower Motor
1. Is the thermostat calling for heat? Is there
Fails to Run
: 120V at the burner receptacle?
2. Check blower side door for seal. Check door
switch. Replace if necessary.
3. Check blower for obstructions. Replace
blower if necessary.
Igniter
1. Check igniter for damage. Replace if
Does Not Glow:
necessary.
2. Check voltage and resistance at igniter.
(Voltage should be 120V. Resistance should be
40-75 ohms.)
3. Check for obstructions to the air inlet and
outlet.
4. Check wiring and hose connections to the
air switch. Replace if necessary.
5. Check voltages at transformer primary and
secondary. Replace transformer or module if
necessary.
Valve Does Not
Gas pressure downstream of gas control can
Come On:
be measure by using a manometer and
connecting to pressure tap on control/
1. Check to see if manual valve heater is ON.
2. Check to see if manual valve knob on heater
gas control in ON.
3. Supply gas pressure can be checked at
1/8” NPT pressure tapping on heater external
manual valve.
4. Check to see if gas control is opening: no
manifold pressure indicates valve is closed.
If the valve is closed, either the gas valve or
the ignition module is faulty.
WARNING:
Do not disconnect ground leads
inside heater. Do not interchange grounded
and ungrounded leads on transformer or
ignition module.
Burner Does Not
1. Check to see if gas lines were properly
Light:
purged of air.
2. Check inlet and outlet gas pressure during
ignition period.
Natural inlet pressure should be 4.6”
Natural outlet pressure should be set
according to chart on page 12.
LP inlet pressure should be 11.0”
LP outlet pressure should be set according to
chart on page 12.
3. Check for proper orifice and air plate.
IGNITION MODULE
LED
