I have the same problem. Relief valve leaks maybe a quart a week. I replaced the valve and turned the temp down to 120F. Still leaks. System pressure is 60psi. I cycled the washer and when the solenoid closed, the pressure spiked to over 80psi. But the valve is rated to 150psi?
I tapped the tank and it sounded that it was full to the top. I will bleed the system and try to pressurize the tank with my compressor. What should the pressure be? System pressure or some other?
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