SECTION 7 – TROUBLESHOOTING
Use the following troubleshooting guide to help diagnose transfer switch problems. Thoroughly inspection transfer switch wiring and cable connections. Correct wiring problems before performing any tests or replacing any components.
7.1 Basic Troubleshooting
In case of generator failure, check the following BEFORE calling your installer:
1.Check generator fuel level and refill tank, if necessary (gasoline or diesel gensets).
2.Check generator oil level alert and refill reservoir if necessary.
3.Check generator battery for low or dead cell.
4.Check all power cord and cable connections.
5.Generator main circuit breaker (on generator) should be in the ON position and run switch should be in AUTO position.
7.2 Troubleshooting Guide
PROBLEM | POSSIBLE CAUSE | SOLUTION | SECTION | ||
A. Power Outage | 1. | No power to transfer switch | 1. | Check ATS connection to battery | 4.3, 4.4 |
occurs but genset | 2. | Genset is in MANUAL or OFF mode | 2. | Set genset to AUTO mode | Genset Owners |
does not start | 3. | Genset does not crank | 3a. Check genset battery and connections | Manual | |
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| 3b. Start genset in manual mode. If starts, check low |
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| voltage cable from switch to genset. |
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| 4. | Genset cranks but does not start | 4.Check genset fuel, spark plugs, refer to genset |
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| (Genset cranks 3 x for 10 sec each) |
| manual | 4.3 | |
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| 5. | Check voltage between CRANK and BATT |
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| 5. | No start signal from transfer switch |
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| genset. Should be 10.5 to 14 Volts DC. |
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| 6. | Control Module may be defective | 6. | If defective, replace Control Module. | 8.4 |
B. Genset runs but | 1. | Genset main circuit breaker tripped | 1. | Reset circuit breaker on genset | Genset Owners |
switch will not | 2. | Genset voltage out of range | 2. | Check genset voltage. Switch will not transfer | Manual |
transfer any or all |
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| loads unless genset voltage is |
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loads |
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| Correct genset voltage if out of range |
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| 3. | Genset frequency out of range | 3. | Check genset frequency. Switch will not transfer |
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| loads unless genset frequency is |
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| genset frequency if out of range |
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| 4. | Utility power restored, genset power | 4. | Switch will temporarily leave loads on generator. |
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| not required. |
| Wait for switch to complete normal cool down |
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| cycle (up 6 minutes) |
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| 5. | Total loads exceed 85% of genset | 5. | Not all loads may be powered all of the time by | 4.5, 6.4 |
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| continuous rating |
| genset. PowerPause™ Modules will cycle some |
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| loads and this is normal. If all loads need to run |
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| all of the time, remove some loads from switch or |
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| 6. | Largest load exceeds genset |
| connect switch to larger genset. |
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| continuous rating | 6. | Check continuous wattage of largest load; largest |
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| load must not exceed genset continuous rating. If | 4.5, 6.4 |
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| exceeds, remove load from switch or connect |
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| switch to larger genset and reprogram switch. |
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C. Transfer switch | 1. | Utility voltage out of range | 1. | Check utility voltage. Switch will not retransfer |
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does not retransfer |
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| loads unless utility voltage is |
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loads when utility |
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| for voltage to stabilize. |
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power is restored | 2. | Utility frequency out of range | 2. | Check utility frequency. Switch will not retransfer |
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| loads unless utility frequency is |
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| frequency to stabilize. |
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| 3. | Service disconnect is OFF | 3. | Turn ON utility service disconnect |
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D. Genset | 1. | Genset not accepting shutdown | 1. | Check genset mode, set to AUTO. | Genset Owners |
continues to run |
| command | 2. | Wait 5 minutes after transfer to utility for cool | Manual |
after retransfer of | 2. | Genset cool down cycle running |
| down cycle to complete. | 4.3 |
loads to utility | 3. | Genset ON signal from switch is ON | 3. | Check voltage between ON and BATT | |
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| after cool down cycle |
| Volts DC, controller module is defective, replace. |
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| 27 |