HVACopediaGlow Brand · Boiler troubleshooting
Annual maintenance and inspection
What is going on
Technician checklist. Service must be done yearly or the warranty is void.
Check in this order
- Check boiler room floor drains for proper function.
- Keep the boiler area free of combustibles and flammable liquids.
- Test the safety relief valve (see relief valve test guide).
- Test the low-water cut-off.
- Test the ignition safety shut-off features.
- Remove the front door panel and check for debris from the combustion air intake.
- Check all venting for leaks. Make sure vent screens are clean and clear.
- Inspect the burner and replace it if it is deteriorated.
- Inspect and clean the heat exchanger combustion chamber if needed (see heat exchector cleaning guide).
- With the boiler running, confirm condensate drips from the condensate tubing. Check the condensate drain line for restrictions.
- Make sure nothing blocks combustion or ventilation air.
- Listen for water flow noise that would indicate a drop in boiler water flow.
Applies to: C95 & C140 Glow Combi boilers
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Source: C-300 C95-C140 Installation & Operation Manual, p. 75. Written in our own words; check the manual for your exact model.
For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.