Vista 10se PWR Supply Wiring

[tpytpy]

Thanks in advance for replies. I have a Vista 10se and I keep getting "no AC". I have two questions -

My power cable has 4-wire Bl, Rd, Gr, Yellow and not sure how to reconnect wires to Board (pin 1 & 2) to the transformer. Also, I have (2) other transformers - can I use one of them, They are as follows -

Original Pittway 120v, 60hz, .30A, 16.5 VAC, 25VA
Optional #1 - Pri: 120VAC, 60Hz, 48W; Sec: 16.5VAC 40VA
Optional #2 - 120VAC, 60Hz, 20W

Please Help - Thanks Tami

[MrRonFL]

Use the 16V 40VA transformer. The wire connections are not polarity sensitive, it's AC voltage. The wire colors you use do not matter as long as it's the same at the transformer and the power terminals.

Installers often double up the conductors on 22-4 wire, just to be safe. When I do this I usually use the red and yellow under one terminal, and the black and green under the other.

Again, as long as the wires are the same at both ends, it doesn't matter.