american standard error code 91

1 Answers

Write Your Answer

Communication Error 91 I came across an American Standard Heat Pump unit with an Acculink communication thermostat with an error code 91. The Service Fact sheet said it’s the Loss of Bit Master (Clock Signal).

No video Answer Now
Was this helpful?
Do you wish to get the latest heat pump news, technology, markets, and discounts? Subscribe Now!
Would love your thoughts, please comment.x