How to turn off air conditioning in Porsche 944?
If you don’t close the high-side valve before you start the car, the can might burst. That would be bad. Start the car and press the a/c switch. Open the low-side valve (the one going to the ac compressor) and let it suck in the R134. Suck suck suck. Porsche 944 Air Conditioning Part IIIa 7-15-2010 The A/C just turned off while driving.
Is the de icing switch on my Porsche 944 defective?
Voltage at only one connector–system has low pressure or switch is defective. Now at this point the manual starts talking about term.3 and term.2, but on my relay, we only have terminals 30,31,85,86,87a. Check de-icing switch.
What to do if your Porsche 944 has a leak?
Open valves and run vacuum pump for 30 minutes, to boil off all moisture. Close valves and make sure vacuum is held. If not, there is a leak. This is a good time to add oil, if needed. Pour some in the hose, the R134 will push it into the system. Open high-side (red) valve. This will let some of the R134 go into the system.
Why is my a / C not turning on after I replaced the thermostat?
– Home Improvement Stack Exchange Why won’t my A/C turn on after I replaced the thermostat batteries? Our thermostat died yesterday, but after replacing the dead batteries with fresh batteries, and confirming the LCD screen was operable, our AC no longer turns on.
If you don’t close the high-side valve before you start the car, the can might burst. That would be bad. Start the car and press the a/c switch. Open the low-side valve (the one going to the ac compressor) and let it suck in the R134. Suck suck suck. Porsche 944 Air Conditioning Part IIIa 7-15-2010 The A/C just turned off while driving.
Why is there no heat in my 944 HVAC system?
The heater control valve is also controlled by a cable. So, when there’s a problem with the system where there’s no heat or excessive heat, it’s normally due to a broken or disconnected cable. On the later model 944 HVAC systems, the A/C evaporator and heater core are contained in the same housing.
Open valves and run vacuum pump for 30 minutes, to boil off all moisture. Close valves and make sure vacuum is held. If not, there is a leak. This is a good time to add oil, if needed. Pour some in the hose, the R134 will push it into the system. Open high-side (red) valve. This will let some of the R134 go into the system.
What kind of oil do you use in a Porsche 944 air conditioner?
PAG is short for polyalkylene glycol. PAG-46 is recommended for the stock ac compressor. It does not mix with the mineral oil used in R-12 systems, so all the old oil must be cleaned out. There is also POE (polyol ester) which is supposedly less incompatible with mineral oil and is compatible with PAG oil.
The heater control valve is also controlled by a cable. So, when there’s a problem with the system where there’s no heat or excessive heat, it’s normally due to a broken or disconnected cable. On the later model 944 HVAC systems, the A/C evaporator and heater core are contained in the same housing.
PAG is short for polyalkylene glycol. PAG-46 is recommended for the stock ac compressor. It does not mix with the mineral oil used in R-12 systems, so all the old oil must be cleaned out. There is also POE (polyol ester) which is supposedly less incompatible with mineral oil and is compatible with PAG oil.