Everything shut down and it shows error 004 what does that mean and how do I fix it [Archive]

dhurley

Jun 2, 2018, 02:11 PM

My thermostat has shut down and it is showing error 004 what does that mean and how can I fix it

I have a INDIGLO thermostat does this help

Stratmando

Jun 5, 2018, 06:46 AM

Try new Batteries, or removing and reinsert Batteries.