Control Interface
DANGER 
HAZARDOUS VOLTAGE
(Can Cause Severe Injury or Death)
Turn OFF all power before installation, adjustment, or removal of transfer switch or any of its components.
Indicator LEDs
A S1 | (Utility) Available Green LED. | When on, indicates source is acceptable. |
B S1 | (Utility) Position Green LED. | When on, indicates ATS is connected to Utility |
CS2 (Generator) Available Red LED. When on, indicates source is acceptable.
D | S2 (Generator) Position Red LED. | When on, indicates ATS is connected to Generator. |
E | When blinking, indicates the ATS is timing a Delay | |
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| When on steady, indicates the ATS is waiting for both |
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| sources to synchronize with each other. |
D | C | E |
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A |
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B |
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Figure 7
F | G | H | I | Pushbuttons | |
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| F | TEST - Pressed and held for 1 second Simulates |
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| a power outage, starts the Generator and |
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| transfers the ATS to S2. |
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| G | EXER SET - Sets an Automatic Exerciser |
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| H | BYPASS TIMER - Pressed while E is blinking |
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| bypasses any remaining countdown Timer |
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| I | CANCEL - Depending on the current state of ATS |
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| operation, ends specific functions or indications |
■ GE Zenith Controls | ZTX Operation and Maintenance Manual | 7 ■ |
