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cooling fan works on a temp sensor in the engine block. it only turns on when the temp reaches a set limit and shuts off when it gets below a set limit.. cooling fan components are , fans, fan relay , and temp sensor . best way to test the fans would be to let the car set running and watch the temp till it goes up to 185 -195 deg. at this time the fans should turn on and the thermostat should open and cool the engine back down. also when ever the air conditioning is on so should the cooling fans be on. if the fans do not run the check all components till you find the broken one. fan relay and air conditioning relay are separate but work the same. and will interchange
1Start the recharging process with any left over freon you may still have. Open the Civic's hood and attach the kit to the Civic's low side port. Then, set the kit onto a place in the engine compartment where nothing can move or shift once the engine has been cranked.
2Start the Civic and let the engine run until it reaches its normal operational temperature.
Single Pressure Gauges for Indl., Commercial & Specialty Uses
3Turn on the airconditioning to its coldest and hardest-blowing settings. Place a thermometer into one of the Civic's air conditioning vents and monitor how the temperature drops. Once the air conditioning's temperature reaches a level, constant degree, remove the thermometer.
4Open all four doors on the Civic. This will allow any colder air generated to escape, and this will keep the Civic's air conditioning for accidentally cycling off while you recharge the refrigerant levels.
5Turn the recharging kit's valve all the way down and let the refrigerant charge into the Civic's air conditioning periodically, shut the valve and look at the kit's gauge. This will allow you to monitor the recharging process. Allow at least one minute to elapse between refrigerant charges into the system.
6Shut the valve of the canister, once it has become depleted. Disconnect the kit from the low side port.
7Detach the hose, gauge, and valve from the empty canister and attach them to a new canister of refrigerant. Reattach the kit's hose to the Civic's low side port and continue recharging the system, allowing a minute between individual charges. The can itself can potentially grow very cold and hard to hold, even with gloves. Should this happen, wrap the can in a towel warmed in water. Ring out excess water before wrapping the canister.
8Place you thermometer into one of the Civic's air conditioning ducts. Keep an eye on the falling temperature within the Civic's air conditioning system. The system is charged when the temperature hits 40 degrees. Also, within the engine compartment, the Civic's air conditioning aluminum tubing become uniformly cold.
9Shut the recharging kit's valve and remove the kit from the low side port, once the system has been successfully recharged. Shut down the Civic's air conditioning, turn the engine off, and remove your key from the Civic's ignition. Also, shut all the doors
One can determine the condition of the pump components by the length of time to fill to 125. For example, when new your unit would most likely take about 3~5 minutes to fill to 125, as it wears would take 5~8 minutes. Now it will not reach 125 so most likely problem is leak at one of the connections or cylinder /piston leaking compression. Easy to check for leaks. Spray soapy water on all connections while running and repair as needed. If no leaks, examine condition of the cylinder close to the top of stroke. Unplug machine, let out all the air, remove cover so that you can see bottom of cylinder. Turn motor my hand to move piston to top and look for scratches. If scratched /worn looking, replace cylinder /piston and bearing. After new parts are installed, time unit to fill to 125 and keep track as you use the unit to tell condition of parts/leaks. Good luck No spell check today so forgive.
Use the remote to enter the timer to switch off - OFF timer setting and the On timing after setting the clock on the remote
Once this is presetted the unit will continue to work shut of in the thermostat settings and fully cuts off power in the set off time.
later the set will come back in the set on time and work till the thermostat setting is reached.
The location of the thermostat could be a problem,if its too close to a vent it will cut off too soon.
Or if its in a sunny or warm location it may run too long.A 2 or 4 degree swing is not that abnormal.Say if you set it for 74 and you get 72 this is not bad.
If the unit is not shutting off at all,be sure the t stat is set to cool/auto.
If still no luck then you may have a wiring problem or a stuck contactor or bad relay,which would require a service person.
You have some issues that probably need to be addressed by a Certified Tech asap. There's an off chance that it could be just thermostat related. If you feel confident on doing what I'm about to instruct go ahead and try it.If you turn off electricity to your unit(should be marked as A|C or furnace or the like if you have the unit on and turn off at the panel it's easier to locate) you can take the cover off your thermostat and you will find various wires. Unscrew the R, Y, and G wires(if they;re not colored red yellow green make a diagram as to which goes where) and twist them together, Then turn electric back onto unit. If the unit runs normally as it should, then you have a thermostat problem and need to get a new one right away. Remember you unit is worth $2,000 to $6000 don't let and electrical malfunction compromise the value, if it.s not the thermostat get someone qualified to look at it. Leave it off til they get there. Good Luck