Hello everyone, I have a 2010 Haier gas furnace that is short cycling. I cleaned the flame sensor, replaced the control board, and put in a new gas valve. It still short cycles. It is a White-Rodgers board. Flame rectification seems to be the issue. I checked the outlet the unit is connected to and I have 120V from hot to ground, 120V from hot to common and 0V from common to ground. I am getting a single flash code when the unit locks out. The indication is low gas pressure, bad HSI, or bad earth ground. I ran jumper wire directly from the ground on the outlet to the unit and no change. The flame sensor has about 57V going through it. I disassembled the flame tubes and cleaned the heads. Anybody out there know about flame rectification?

So, I'm a first time homeowner, and we bought this fixer upper for few shillings and a tomato. However, there is no viable heat. The house is about 1600 sq. Ft. And has 9 240v baseboard heaters. 3 work and the others get 240v power but no heat. I have swapped a good thermostat in the non working units to no avail. Therefore i believe I need to swap out whole units. So here is my question. I have a gas meter and some pipe going somewhere ???? Would I be better off getting a good used 90% efficiency or better natural gas furnace or using the electric baseboards and paying large electric bills? Part B of the question is....there is absolutely no duct work in this 2 story 1941 plaster and lath house. Is there an effective, inexpensive way to get heat throughout the house with a furnace? Aesthetics arent important. I know I'll have to run an electrical curcuit to the furnace, gas connections and venting. There is only 400 sq. Ft upstairs (2 small bedrooms) and the 2 baseboards heat the upstairs very well pluse downstairs heat will rise and help also. Any ideas would be greatly appreciated. And again, pleasee dont call me out on being ignorant and having no clue because i have already made that disclaimer! Thanks!