Hi;

I have a Carrier Gas Furnace that does not produce enough heat. I cleaned the filter and even replaced with a new one. Its still not produced enough heat.

Sometimes, its attempt to ignite the flames several times before its successfully runs. If I set the temperature high between 20C-25C, then the flame lit-up right away, but if I set temperature below 17C then the flame will not lit-up right away.

Any help would be greatly appreciated