Heater control f550 not working low speeds and no temp control

Tiny
GIRLING
  • MEMBER
  • 2008 FORD F-550
  • 167,000 MILES
1st & 2nd speeds not working. Temp. Control has only hot no cold.
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Tuesday, November 29th, 2011 AT 10:38 PM

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Tiny
RASMATAZ
  • MEMBER
Check and test the blower switch, blower motor resistor/fan control module and check the air blend door/actuator
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Tuesday, November 29th, 2011 AT 10:46 PM

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