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Glow Brand · Boiler troubleshooting

Display is blank

Glow B85/B120/B160

What is going on

Nothing on the LCD at all.

Likely causes

  • No power to the boiler
  • Breaker off
  • ICB 5 A fuse blown
  • Display cable loose

Check in this order

  1. Confirm the boiler is on a live 120 V circuit and the breaker is on.
  2. Look for the LED on the ICB. If it is off, check the 5 A fuse inside the ICB (replace only with the same B-221 5 A 250 V type).
  3. If the LED is on, check the cable from the ICB to the display.

Applies to: B85, B120, B160 (NG and LP)

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Source: Glow Brand B85/B120/B160 Installation & Operation Manual V20231025, 13.2.1 p.67. 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.