Reasons for high pressure alarm
(1) The drive part of the solenoid valve of the control board is damaged;
(2) The solenoid valve connecting wire is detached or has poor contact;
(3) the electromagnetic valve electromagnetic head damage (measured resistance value judgment) leads to no switching;
(4) The solenoid valve is damaged;
(5) there are serious pipelines inside the system;
(6)the molecular sieve is seriously wet or chalked
