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It means that you either have a bad thermostat or bad thermostat wires. You can also check for continuity in the thermostat wires with the thermostat on.
Your thermostat or condenser is wired wrong on the control side. Usually there is a terminal inside your furnace that has the same connection colors (Y, W, R, G, C) as your thermostat. It should be connected color to color to the thermostat with the 2 wires from the condenser wired to Y and C.
To replace the thermostat on a 1997 Pontiac Grand Am 3.1, first disconnect the negative battery terminal and loosen the clamp on the radiator hose. Next, remove the mounting bolts from the thermostat housing and insert the new thermostat.
The thermostat is just a low voltage on-off switch. There should be two small wires (assuming you are replacing an old unit) coming out of the wall. These could be any color combination. Connect one wire to each of the terminal screws inside the thermostat housing. Replace the cover and turn it to the desired setting. The furnace should now hum happily until set temperature is reached The `R` terminal on the stat is for the powered wire from the furnace, the `W` terminal is the power back to the furnace to start it those are the 2 to use. If you have 3 wires the third one goes on the `G` terminal, that is to run the fan only if you have a subbase with fan switching (Auto/On) capability. Usually but not always all 3 of these wires will be color coordinated with their terminals (Red,White & Green).
This may seem silly at first but, follow the upper radiator hose it's terminal end. There you will find your thermostat. Hope this helps. Sean
Yes you definitely need a thermostat to keep engine from overheating + or overcool,g especially in cold weather.
Disconnect all power sources to your existing thermostat. Remove the cover. Locate wire connecting thermostat and heater. Not the terminal designations. Disconnect wiring to heater. Remove old thermostat from wall. Drill holes for mounting new thermostat. Connect wires. Attach subbase of new thermostat to wall. Connect wires, matching labels. Attach thermostat to subbase.
An electronic programmable thermostat has a printed circuit board on which is mounted a chip one or more relays LCD display terminal strip sometimes a backup battery
If you replaced the furnace and thermostat this past winter, and now the A/C doesn't work. You probably just have a loose control wire. Check the yellow wire at the stat. It should be on the Y terminal. Next, look inside the furnace at the terminal block. The condenser wire should have two conductors. One hooks up with the yellow wire on the Y terminal of the terminal block. The other hooks to the C terminal. Always turn off the breaker to the furnace before working on any wiring. No need to fry the transformer.
You will see that there are two pipes on your radiator. One is on top of your radiator and one on the bottom. The pipe that is on top of your radiator connects on your engine head with an G-clamp. You must take the G-clamp of and then you will see your thermostat.
It is the terminal on the megger that the ground cable connect to when testing a device to ground.