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Use a multimeter set to the k-Ohm scale
For systems requiring auxiliary or emergency heat (multi-stage)
OEM Compatibility: Specifically engineered for a precise match with Weil-McLain Ultra and GV90+ gas-fired boilers
the SP20162 ensures consistent BTU output and reliable pilot ignition
Lochinvar & A.O. Smith 100208463 Tester Assembly 321142-301 Use a multimeter set toThe Lochinvar & A. O. Smith 100208463 Tester Assembly is a critical diagnostic tool designed for service technicians to accurately evaluate variable speed fan motors in high efficiency Lochinvar heating systems and A. O. Smith air handling units. This OEM fan tester allows for rapid HVAC troubleshooting by isolating the blower motor from the control module, helping to determine if a performance issue stems from the motor's internal electronics or the
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