LAARS IGI-180C-5(N,X) - Service Manual - Manual (Page 48)

VIII - Service Procedure
NOTE: Before proceeding with dismantling, be sure to follow the CAUTION instructions before
each explanation. Always disconnect the electrical supply, turn off water and gas supply
service valves, and drain all water from the unit before proceeding. Only trained and qualified
service agencies should attempt to repair this product.
Service Procedure
IGI – 1. Removal of the Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
IGI – 2. Removal of the PC Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
IGI – 3. Removal of the Water Flow Control and Sensor . . . . . . . . . . . . . . . . . . . . 49
IGI – 4. Removal of the Ignition Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
IGI – 5. Removal of the Combustion Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
IGI – 6. Removal of the Water Temperature Thermistor . . . . . . . . . . . . . . . . . . . . 50
IGI – 7. Removal of the Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
IGI – 8. Removal of the Burner and Burner Manifold . . . . . . . . . . . . . . . . . . . . . . 51
IGI – 9. Removal of the Gas Valve Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
IGI – 10. Removal of the Heat Exchanger Assembly. . . . . . . . . . . . . . . . . . . . . . . . 52
IGI – 11. Removal of the Thermal Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Re-assembly in all tasks listed above in the reverse order of dismantling (unless stated otherwise).
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