Goetti Air Conditioning Heat Pump manual 24V OUT COM, Jumper Wire, flfl H

4.A field check-out of the defrost control board can be made by the following steps:

1.Attach a "jumper"wire across the two terminals of the sensor wires (see wiring diagrams on pages 11 through 14 showing the sensor being wired to the =COM" terminal of the defrost control board).

=Attach a "jumper" wire across the two "TST" terminals. The timing cycles are divided by a factor of 256. (e.g. 90 minutes is reduced to 21.1 seconds, 60 minutes to 14 seconds and 30 minutes to 7 seconds). At "T1" setting the unit should go into defrost in 7 seconds.

1For this test, the unit will stay in "defrost" for only about 2 to 3 seconds due to the 10 minute override. (L_. = 2.3 seconds)

°°°	TST	HLD	24V OUT COM (_)
		H	flfl H
0		0
T3	T2	T1.
		JUMPER WIRE

FIGURE 3

T3 = 90, T2 = 60, T1 = 30

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