generator fan wont run

[davidbrady]

Al,

If you're seeing 120V on both legs on your inside gauges then the fan should be running. The Powertech has an automatic voltage regulator that controls the engine governor to maintain 60HZ and 120VAC. There's a delay when you initially start the genny till things stabilize then the AVR kicks in 120VAC on both legs. Once that happens you should see 120VAC on both legs at your inside voltage gauges and the fan should be running. If the fan isn't running or if you don't see 120VAC then I'd check the breaker mounted inside the Powertech control box (where the switches are). You need to be very careful checking the wires feeding the breaker. Don't do it if you're not comfortable with high voltages. If there is 120VAC at the inside gauges then you need to see if the fan is getting 240VAC. Check the voltage at the fan junction box.

Typical failure modes include faulty AVR, faulty fan motor, and faulty breaker.