Why is my contactor not pulling in on my AC unit?
AC contactor not pulling in is not a major issue. Usually, the contactor malfunctions due to corroded contacts, coil failure, and contactor burnout. 1. Corroded Contacts – The contact points in an AC contactor are susceptible to corrosion because of moisture present in the air.
How can I tell if my AC contactor is bad?
Bad AC Contactor Symptoms
- Humming. When your AC is on, it may produce a humming sound – but, it won’t power on.
- Chattering. When the contacts are dirty, or the coil has become weak, you may hear the plunger make a chattering sound.
- Melting.
What causes a contactor to fail?
Contactors fail due to a wide range of reasons. Some of the common reasons are excess current flowing through the contacts. High current can be either due to overload or due to short-circuit. High current can cause the contacts to melt.
What happens if the a / C compressor does not engage?
If the system is fully charged (pressure correct), but the A/C compressor clutch does not engage, the fault is electrical. You’re experience as an electrician directed you to first check the basics (fuses), and now it’s time to trace the circuit and determine what we lost (power or ground) and where we lost it.
Why is my a / C not working on my Chevy Silverado?
If it didn’t work or stayed on all the time then there is a problem. Subject: Air Conditioning (A/C) Blows Warm Air Intermittently. This condition may be caused by the A/C compressor clutch cycling out early when the low pressure side reaches approximately 380 kPa (55 psi).
Why is my AC not working in my coach?
The most common problem when the compressor runs and the fan does not start is a blown fuse and that is caused by a failed fan motor mounted on the condenser coil mounted out side the coach. Underneath the front or in the rear in the area of the radiator.