stevo4546
15-02-2015, 10:30 PM
Hi guys,
Been called to a trane package system today model ewkh400ddw type 376367-1.
switched system back on and called for both circuits in heating mode via test push button. both circuits start and heat coming onto evap coil but after short period system trips on high pressure. I have checked evap fan going correct way & reversing valve and all correct, switched over to cooling mode and found pressures very low 3 bar and 18 bar for r410a. - system running on r410a which should be higher.
System has a pre heat coil and a lphw coil and they are fine but only when refrigeration side called for it trips on hp in heating mode and low pressures in cooling as stated previously.
Heat and cool coming onto evap when both modes called for.
There are 2 x exhaust fans at inlet to package unit which i cant seem to get running in any mode.
Been called to a trane package system today model ewkh400ddw type 376367-1.
switched system back on and called for both circuits in heating mode via test push button. both circuits start and heat coming onto evap coil but after short period system trips on high pressure. I have checked evap fan going correct way & reversing valve and all correct, switched over to cooling mode and found pressures very low 3 bar and 18 bar for r410a. - system running on r410a which should be higher.
System has a pre heat coil and a lphw coil and they are fine but only when refrigeration side called for it trips on hp in heating mode and low pressures in cooling as stated previously.
Heat and cool coming onto evap when both modes called for.
There are 2 x exhaust fans at inlet to package unit which i cant seem to get running in any mode.