home
We speak HVAC so you don't have to
Find Local Contractors

1. I need a new:

2. My zip code is:

See all questions

Red light on mother board flashes 4 on an Armstrong Air Ultra V Tech 91 furnace.

Post created: 2016-02-25 Type of Equipment: Furnace Views: 82

This question was created on the page: https://www.furnacecompare.com/furnaces/armstrong-air/ultra-v-tech-91.html.


On 2016-02-25 Gary wrote:

A red light flashing 4 times on this furnace indicates "Limit or Rollout Switch Open". You may need a new limit switch. It's always a good idea to have a heating contractor do this sort of repair. If you'd like to have a contractor take a look at this, we can help you find one, here.


Your Answer


Name:
Copyright 2002 - 2016 furnacecompare.com