Electrical Assistance with a furnace please
Hi all, I just installed a new Suburban NT20 furnace and I need some help with the wiring. There's only four wires, red (hot) yellow(grnd) and two blue which are for the t-stat. My issue is that the ...
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To check continuity set the scale to ohms. Touch the leads together and you should get zero. Now set the thermostat to switch heat on and touch the leads to the terminals. You should get very close to zero ohms.
To check for voltage set to 20 vdc scale. Put the leads on the battery terminals and look for about 12.5 to 13.5 volts. Now move the lead to what you want to check. Make sure the ground is good or extend the lead all the way back to the battery if needed.
To check for voltage set to 20 vdc scale. Put the leads on the battery terminals and look for about 12.5 to 13.5 volts. Now move the lead to what you want to check. Make sure the ground is good or extend the lead all the way back to the battery if needed.
