Is it bad to bypass AC relay?
Is it bad to bypass AC relay? Bypassing only the main A/C power relay does no long-term harm but bypassing any low/high pressure cut-off switch should only be done for brief testing and you really should have gauges in place to confirm that. What happens if the AC compressor relay goes out? Without this relay, the AC compressor will not have power and the AC system will not function. The AC compressor relay is no different then other electrical relays - its electrical contacts will eventually wear or burn out, and the relay must be replaced. What's the average rating...