Testing The Ignition Safety Shut Off Device - Watts AERCO MLX EXT 321 Installation, Operation & Maintenance Manual

Modulex Light Commericial Series
CHAPTER 4: Installation Instructions

4.34 TESTING THE IGNITION SAFETY SHUT OFF DEVICE

1. Power on by switching on the ON-OFF switch.
2. Create a request in C/H Central Heating using the E8 controller.
3. Turn burners ON.
4. Disconnect the igniter cable (WHITE) of BURNER 1.
NOTE:
Ensure the cable end is not grounded to the enclosure frame, or to any other grounded part.
5. The display will show ERROR CODE E05 (Loss of Flame). See Figure 4-35.
Figure 4-35: "Loss of Flame" Error Code (E 05)
6. Press Reset Button on E8 Controller.
7. The boiler will retry the ignition cycle and the display will show ERROR CODE E04 (No
Flame Detected During Ignition). See Figure 4-36.
Figure 4-36: "No Flame Detected During Ignition" Error Code (E 04)
8. Reconnect the ignition cable of BURNER 1.
9. Press Reset Button
10. Check that the boiler starts correctly.
WARNING!
Do not touch the inside of the ignition cable while it is disconnected during start-up of the
boiler.
OMM-0087_J • GF-143 • 11/17/2020
Ignition Safety Shutoff Device Test
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