BASO BGH2UNCNTRLHT-01 - Manual (Page 13)

BGH2UNCTRLHT-01 Universal Hot Surface Ignition Control Installation Instructions 13
Troubleshooting
!
WARNING: Risk of Personal Injury.
Do not place face, hands, or other parts of the body
in or near the burner area when the LED is flashing
(recycle mode). When the LED is flashing, the
control may at any time (while in the recycle mode)
re-energize the burner control system and ignite the
burner which may result in electric shock from
contact with the electrode or severe burn injury from
firing of the burner.
If the system does not function properly, determine
the cause using the procedures in this section.
Before proceeding with troubleshooting the system,
check the following.
Preliminary Checks
‰ Are all mechanical and electrical connections tight?
‰ Is the system wired and ground correctly?
‰ Is gas inlet pressure per manufacturer’s
specifications?
‰ Is the system powered?
‰ Is the thermostat calling for heat?
LED Error Indications
If the control module internal diagnostics detect a
fault it will go to lockout. The hot surface igniter and
gas valve will be turned off. The LED will flash an
error code 0.25 seconds “on” and 0.25 seconds “off"
for each count of the error code with 1 second off
between codes. The control will remain in this
condition until power is removed by turning off the call
for heat. The flashing LED error code indicates a
problem with wiring, or a component not working, or
the control module is faulty. Try to recycle the power
on the control. If the error repeats then see Table 3
Troubleshooting Guide to determine the problem.
Table 3 : BGH2UNCNTRLHT-01 Universal Series HSI Control Troubleshooting Guide
RED
LED
Flash
Code
ERROR
Indication
Troubleshooting Guide
No LED
“ON”
No Power
1. Check for 24 volts on terminal 8 (24V TH) and terminal 2 (24V GND).
2. Check for “OPEN” limits wired between terminal 8 (24V TH) and the 24 volt secondary
coil winding of the controls transformer.
3. Check for 24 volts on the secondary coil winding of the controls transformer.
1
Flame Sense
Circuit
1. Check if gas is turned “ON”.
2. Check incoming power (NEUTRAL) wiring to terminal 4 (L2 NEUTRAL).
3. Check Igniter wiring to terminal 7 (HSI HOT) and terminal 5 (HSI NEUTRAL).
4. Check Flame Sensor tip is in the flame. For proper sensing the rod tip must be 3/8”
(10mm) to 1/2” (13mm) in the flame.
5. Check the Burner Ground is in the pilot flame. For proper sensing, the burner ground
must be 3/8” (10 mm) to 1/2” (13 mm) in the flame and is connected to terminal 1
(BURNER GND).
6. For Internal Flame Sense circuits, check “JUMPER WIRE” is on
terminal 10 (SENSE REMOTE) and terminal 7 (HSI HOT).
7. For a Remote Flame Sense circuit; check that the Jumper Wire is removed from Terminal
10 (SENSE REMOTE) and Terminal 7 (HSI HOT). Also, check wiring of the Remote
Flame Sensor to Terminal 10 (SENSE REMOTE).
3
GAS Valve
Circuit
1. Check “GAS VALVE” wiring to terminal 9 (VALVE) and terminal 3 (VALVE GND).
2. Check for 24 volts at the coil of the “GAS VALVE”.
4
Line Voltage
/Freq. Circuit
1. Check Burner Ground wiring to terminal 1 (BURNER GND).
2. Check incoming power Line 1 (HOT) (120 or 240 VAC) wiring to terminal 6(L1 HOT).
5
Internal
Control
1. Review all ground connections.
2. Software error – Restart control module.
NOTE : If Troubleshooting Guide has been used, and the Control Module is flashing a RED LED FLASH ERROR CODE, then
the Control Module may be faulty. Replace the Control Module.