Troubleshooting - Pro Spot PHS-101 Instruction Manual

7.0
This chart will assist you in resolving common problems you may encounter. These are not all the possible
solutions.
1. The Display says "Low Voltage" on Batt 1 display line.
This indicates that Battery 2's voltage line reached the minimum safe operating voltage and has been
disabled. The battery is not available for welding and is being charged automatically (if welder is plugged in).
An alarm will sound when attempting to weld if "Low Voltage" alert is displayed. To clear "Low Voltage" alert
and continue welding with remaining batteries, turn o the switch (Batt 2 in this example) and welding can
continue. When Battery 2 reaches 13.8V it will be available to use again when the switch is turned on.
2. The display shows "SERVICE" on Batt 3 display line.
This alert indicates that the batter voltage has fallen below 11.5V and the batter needs to be replaced.
3. Low weld power & Batteries not charging; Fan is not on, but otherwise the welder
appears normal.
- Check power cable for voltage reading.
- Check small breakers on back panel, the breakers are resettable by pushing the breaker.
4. Single-Sided gun trigger does not work or seems intermittent.
The welder is programmed with 5 sec delay between welds to conserve power and prevent overheating.
5. The Double-Sided gun opens by itself and the LCD displaces "SHORTED CONTACTOR"
warning.
Under rare circumstances, one or more battery contactors may remain closed after a weld is completes. The
software will detect this condition and automatically retract the tips to prevent damage to the welder. If you
see this warning, take the following steps:
1. Turn the unit o by pressing and holding the weld control knob.
2. Disconnect air from the unit and remove the side panels of the welder as shown in section 3.4.
3. Visually inspect the contactors to see if any of them appear to be stuck closed. If any contactor
appears stuck, please contact Pro Spot technical support for further instructions. If no contactor is
stuck, simply turning the welder back on will clear the warning and allow welding to resume.
6. Double-Sided Spot Gun isn't closing
Single-Sided trigger push or Single Sided Positive is touching ground cable.

TROUBLESHOOTING

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