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6-4. Troubleshooting
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| Y Turn Off polyweld system, and disconnect input power |
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| before inspecting, maintaining, or servicing. |
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| Trouble |
| Remedy | |||
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No weld output from any module; fan | Place line disconnect device in On position (see Section | |||||
motors off; pilot light off. |
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| Check line fuse(s), and replace if needed. Reset circuit breakers (see Section | |
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| Check for proper input connections (see Section | |
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| Check position of input voltage jumper links (see Section | |
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| Be sure power switch is On (see Section | |
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| Check fuse F3 and/or F4, and replace if needed (see Section | |
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| Have Factory Authorized Service Station/Service Distributor check Start/Stop push buttons PB1/PB2 | |
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| and replace if necessary. | |
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No weld output from any module; fan | Thermostat TP1 open (overheating). Allows fans to run; thermostat closes when unit has cooled (see | |||||
motors on; pilot light off. | Section | |||||
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No weld output from any module; fan | Have Factory Authorized Service Station/Service Distributor check contactor W and replace if needed. | |||||
motors on; pilot light on. |
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Limited output and low open circuit volt- | Check incoming power for correct voltage. Replace line fuse if open or reset circuit breaker (see Section | |||||
age from All modules. |
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| Check position of input voltage jumper links (see Section | |
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No weld output from one module only. | Check fuse links, and replace if needed (see Section | |||||
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Low weld output from one module only. | Place Remote Amperage control switch in Off position or connect remote amperage control to Remote | |||||
No amperage control. | Amperage Control receptacle (see Section | |||||
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| Check module fuse link, and replace if needed (see Section | |
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| Reset module supplementary protector (see Section | |
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| Module thermostat open (overheating). Allow module to cool down; thermostat closes when module has | |
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| cooled (see Section | |
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Erratic weld output. | Tighten all weld cable connections (see Section | |||||
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| Check for proper size and type of cable (see Section | |
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| Check for proper input and output connections (see Sections | |
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| Use dry, properly stored electrodes. | |
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No weld output at 115 volts ac duplex | Reset overload supplementary protector CB1 (see Section | |||||
receptacle. |
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| Check fuse F3 and/or F4, and replace if needed (see Section | |
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Fan motor(s) does not run when On | Check fuse F3 and/or F4, and replace if needed (see Section | |||||
push button is pressed. |
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| Have Factory Authorized Service Station/Service Distributor check control relay CR1 and fan motor FM1 | |
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| or FM2. | |
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For GTAW, wandering arc − poor control | Select proper size tungsten (see Section | |||||
of direction of arc. |
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| Properly prepare tungsten (see Sections | |
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Tungsten electrode oxidizing and not re- | Shield weld zone of drafts. | |||||
maining bright after conclusion of weld. |
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| Properly prepare tungsten (see Sections | |
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| Replace torch parts if water has leaked into torch. | |
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