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Symbio™ 700 Unit Controller (UC) Troubleshooting Info
Note: J19-7 and J21-1 are current limited to 1.1 amp.
Note: J2 is not intended to charge mobile phones.
Be aware on of wire colors, for some reason Black is 24 VAC Hot and Red is 24 VAC Common.
24 VAC power for the board comes in on J4-1 & 2. This comes from the Adapter Board J2.
Plugs P7 (Condenser Fan Out) and P11 (SOV 1 & 2 Out) are powered from P6, which is powered from
either Adapter Board J1 or TNS2 on 10T, 20T DUAL TTA AND ALL TWA UNITS.
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