The compressor and fan don't come on when the air conditioner is turned on and hot air comes through the vents. However, when the relays are removed and a test wire is inserted into the relay port, th
The compressor and fan don't come on when the air conditioner is turned on and hot air comes through the vents. However, when the relays are removed and a test wire is inserted into the relay port, the compressor and fan come on and cold air is produced through the vents. What could cause this?
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I would check the low pressure switch next. The switch cuts power to the compressor if the pressure is too low. The switch can fail. Same goes for the high pressure safety switch. As for leaving the relay bypassed, you would need to use a test light or meter to see if you are using battery power with the key off. I would not recommend it.
Someone will need to find out if the compressor clutch is failing, or if it is loosing power due to a pressure switch or other problem. A faulty relay or switch could get hot and switch off power to the compressor.
It still seems that you don't have enough refrigerant by what you have explained .Anyway you look at it the a/c system is leaking way above what is normal for your honda.you need to get some gauges and place a small charge of refrigerant with florescent dye in it (you can buy this at your local parts store)and use a ultra violet light (This also you can buy this at your local parts store)and check to see where the leak is coming from at connections of hoses and around the compressor.This will tell you it is leaking and where and what further action needs to be taken.
Check the air conditioner fuse and replace as necessary.
Air conditioner system discharged.
Have the system evacuated, charged and leak tested by an MVAC
certified technician, utilizing approved recovery/recycling equipment.
Repair as necessary.
Air conditioner low pressure switch defective. Replace switch.
Air conditioner fan resistor pack defective. Replace resistor pack.
Loose connection, broken wiring or
defective air conditioner relay in air conditioning electrical
circuit. Repair wiring or replace relay as necessary.
Air conditioner has a smell when used
The air conditioner evaporator
drain hose is blocked or partially restricted, allowing condensation
to build up around the evaporator and drainage tray. Clear the drain
hose where it exits the passenger compartment.
Check compressor clutch wiring, electrical connections and compressor clutch, and repair or replace as necessary.
If your car is getting Overheat when you turn the air conditioner On, it
means that you need to repair your compressor or it will need to be
It could also be that if your car has a 2nd or separate
radiator fan that should come on when the car is either hot OR when the
A/C is on - perhaps it is NOT coming on and thus your car overheats. If
your car does have a 2nd fan, check to see if it is coming on when you
turn on your air conditioner.
Also, I would check that your radiator fan is on (even if it has only
one electric fan) when the car temperature is getting near the HOT zone.
At some point, the fan should come on to help circulate the air through
the radiator vents and help cool the coolant (water) in the
In short, make sure your fan(s) are working okay. If not, that could be
causing your car to overheat too.
It sounds like the heater motor may not be operating. When you switch the heater fan on can you hear the motor running? If not then it may have blown the heater fan fuse, check the fuse's and then try it again. If the fuse is ok then it could be a faulty switch or fan motor.