Cruisair beeping

[gyrospiro]

My cruise air unit is beeping, it's set to heat mode not heating
There is plenty of water flow. Anybody ever heard of this?

 

[gyrospiro]

filter is clean, no error codes on control

 

[gyrospiro]

its not the carbon monoxide detector. when I shut unit down it stops beeping

 

[rcknecht]

How's you power? If the voltage is low mine will beep...