Troubleshooting
Problem
Au tomatic transfer switch does not
transfer to generator
Au tomatic transfer switch does not
transfer to utility
Ge nerator is still running after switch
transfers to utility power
Ge nerator or supervised loads (air
conditioner, etc.) are operating
improperly when generator is
supplying power
Ge nerator is still running after utility
power is restored
Re lay modules do not close after
five minutes when on generator
power
Sy mphony II system control board
status LED does not change
illumination blinking pattern for
utility or generator power.
Cause
1. Generator breaker open.
2. Generator voltage not acceptable.
3. Generator disconnect circuit breaker open in
transfer switch.
1. Utility disconnect circuit breakers open in
transfer switch.
2. Utility voltage not acceptable.
Engine cool down period.
1. Remote modules are not operating correctly.
2. Too much load on generator.
3. Current transformer not connected.
4. Broken current transformer.
5. Communication lost due to power line noise.
6. Communication lost between transfer switch
and Symphony II control boards.
1. Minimum engine run time has not elapsed.
2. Fuse(s) in transfer switch is defective.
1. Too much load on generator.
2. Communication interruption.
3. Priority set to 9 or 10.
1. TxRx and TxRx GND communication wires are
not connected between the generator and
transfer switch.
2. TxRx and TxRx GND communication wires
are connected incorrectly between the
generator and transfer switch.
3. TxRx and TxRx GND communication wires
affected by electrical noise interference.
4. Only 1/2 load or single panel transferred.
Correction
1. Reset generator circuit breaker.
2. Refer to generator manual.
3. Reset generator disconnect circuit breaker
in transfer switch.
1. Reset utility disconnect circuit breaker in
transfer switch.
2. Wait for utility voltage to return to normal.
Engine should stop after 1 minute.
1. Five minute delay timer has not expired.
2. Decrease load to generator.
3. Contact local authorized service center.
4. Contact local authorized service center.
5. Verify fluorescent ballasts are rated for
residential use only. If not, replace with
residential ballast.
Install noise filter in series and close to
problematic device.
Rewire remote module to opposite
power line (L1 or L2) from that of
problematic device.
6. Contact local authorized service center.
1. Wait five minutes for transfer switch to
retransfer to utility power.
2. Contact local authorized service center.
1. Decrease load to generator.
2. Reset utility disconnect circuit breaker in
transfer switch and wait five minutes
(turn OFF breaker for ten seconds then
turn it back ON).
3. Appliance will not turn on during standby
power. Contact local authorized service
center to change priority setting.
1. Contact local authorized service center.
2. Contact local authorized service center.
3. Contact local authorized service center.
4. Contact local authorized service center.
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