you read the manual or not
try this http://dc581.2shared.com/download/PAYS4BA9/AP28N0A_E_31713A.pdf?tsid=20130619-120148-b8b32113
Still waiting for reply
Dear RANGER; Everything is stable before tripping and that is very ware !!! Any other causes may cause sudden reduction in pressure?
Hi check for previous posts on re , occasionaly these "high" inputs using 230 volts stop working and you need to switch to the adjacent input using low voltage 24vac. on the pco cotroller hp input...