Product Manual

Form #43219020
June 09 12
obstructs the venturi or the screen. Maximum heating efficiency and clean combustion will be maintained by
keeping the emitter and burner clean. To clean the heater, follow these instructions: 1. Turn off all electrical
and gas supply to the heater. 2. Clean the reflector. 3. Remove the main burner orifice and clean it thoroughly.
4. Check the venturi opening to be sure it is clean. If there is any evidence of dirt accumulation in the venturi,
remove it.
15) BURNER OPERATION/TROUBLESHOOTING
A) IGNITION MODULE DIAGNOSTICS
The LED located on the ignition module (see Figure) will
flash ON for ¼ second, then OFF for ¼ second during a
fault condition. The pause between fault codes is 3
seconds.
LED Indication Error Mode
Steady On Internal Control Failure
2 Flashes Flame Sense Fault
3 Flashes Ignition Lockout
B) FLAME SENSOR TESTING
The flame current is the current that passes through the
flame from the sensor to the ground. The minimum
flame current necessary to keep the system from
lockout is 0.7 microamps. To measure the flame
current, connect an analog DC microammeter to the FC-
and FC+ terminals per diagram. The meter should read
0.7 µA or higher when the burner is running full on. If
the meter reads below zero, the meter leads are
reversed. Disconnect power and reconnect the meter
leads for proper polarity.
C) TROUBLESHOOTING CHART
TROUBLE POSSIBLE CAUSE SOLUTIONS
Heater is not glowing
red…
 The supply gas pressure is too low.
 Improper size of gas piping.
 The orifice is clogged.
 Incorrect orifice size.
 Check the manifold gas pressure and
adjust if necessary.
 If you are not sure of the performance,
use the NFPA 54 gas pipe sizing table.
 Clean the orifice.
 See the instructions for correct orifice
size and replace if necessary.
Heater will not
attain the desired
temperature…
 There is insufficient heat in the building
for heat loss (i.e., not enough heaters).
 The thermostat sensing bulb is
incorrectly placed.
 The thermostat is out of calibration.
 Conduct heat loss and add heaters or
other source of heat as necessary.
 Reposition as necessary for proper
operation. NOTE: The sensing bulb
should be shielded from direct radiation
to prevent short cycling of the heater.
 Recalibrate (if possible) or replace.
Flames flaring up,
outside of emitter
surface…
 The gas pressure is too high.
 Incorrect orifice size.
 Incorrect type of gas supplied to the
heater.
 Not enough combustion air.
 Check the manifold gas pressure and
adjust if necessary.
 See instructions for correct orifice size
and replace if necessary.
 Check the nameplate to identify the
correct type of gas the heater is equipped
to operate.
 Clean the emitter with compressed air.