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156 Part Number: 000015431 Rev 02 6/20
COMPRESSOR TIME DELAY
FUNCTION
Supplies or interrupts power to the compressor contactor
coil. The time delay starts whenever line voltage is
removed/reapplied; The contact closes when the delay
period ends.
Specifications
Contact Delay Period
SPST
Normally open
300 seconds (5 minutes)
+35%/-15%
CHECK PROCEDURE
1. Verify line voltage is supplied to the condensing unit.
2. Disconnect/reconnect power to the condensing unit
and test for line voltage at terminals 2 & 3.
Line Voltage at Terminals 2 & 3?
Yes Proceed To Next Step
No Verify HPCO & LCPO are closed
3. Wait 5 minutes for the delay period to expire then
test for line voltage at terminals 1 & 3.
Line Voltage at Terminals 1 & 3?
Yes Time Delay is operating correctly
No
Verify the delay time has expired
Verify the HPCO & LPCO are not momentarily
opening/closing during the delay period
Replace the time delay
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