Patton Electric HRH316 Ceramic Mid-Size Heater "operation buzzer working" Questions

Patton PRH11 Buzzer Sounds on HIGH after 2 minutes I have a Patton PRH11 which is looks exactly like the HRH316. It is a 1500W heater. When I turn it on High in a 12x12 room with a temperature below ...

Loud buzzing after heating up I have a Marvin Quartz Radiant Heater that makes a sudden loud buzzing noise after being turned on for about a minute or two. When this starts, the heating elements seem ...

Goodman furnace GMPN080-4 Getting 4 RED blinks/Open Limit Swtch I have a Goodman furnace GMPN080-4 REV B. I had the blower motor take a dive, so I replaced it with another equivalent 115 VAC 60 Hz 1/2