York EVHC 09 DSAAAR Service Manual

Also see for EVHC 09 DSAAAR: Operating and maintenance instructions

York EVHC 09 DSAAAR Service Manual Manual pdf 46 page image

1663ǃHow to Check simply the main partNYNYNYNYNY(1) Capacitor charge fault (Fault with outdoor unit) (AP1 below refers to the outdoor control panel)Use AC voltmeter to check if the voltage between terminal L and N on the wiring board is within 210VAC~240VAC.Main Check Points:If the reactor (L) is correctly connected? If the connection is loose or fallen? If the reactor (L) is damaged?Fault diagnosis process:Switch on the unitand wait 1 minuteUse DC voltmeterto measure thevoltage on the twoends of electrolyticcapacitor (test3)Voltage higher than 200V?Fault with the voltagetesting circuit oncontrol panel AP1Replace the controlpanel AP1Measure the AC voltage betweenterminal L and N on wiring boardXTVoltage within210VAC~250VAC?Switch off the powerand repair the supplypower to restore thevoltage to210VAC~250VACRe-energize andswitch on the unit If the fault is eliminated?Switch off the power and wait 20 minutes; oruse DC voltmeter to measure the voltage on thetwo ends of capacitor (test3), until the voltageis lower than 20VCheck theconnection of reactor(L in the ElectricalWiring Diagram)If the wiring ofreactor L is normal?Connect the reactor Laccording to ElectricalWiring DiagramRe-energize andswitch on the unit If the fault is eliminated?EndReplace the controlpanel AP1Troubleshooting Guide