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Underfloor heat inoperative


Farhanz
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Underfloor heat inoperative

  1. Underfloor heat thermostat plug remove install.
  2. Underfloor heat switch replacement.
  3. Swtch toggle replace
  4. Corrosion treatment temp cont valve
  5. Thermostat replacement 
  6. Temp cont valve replacement 
  7. Replacement underfloor heat
  8. Wire No H230A20N repair
  9. Terminal 15 at TB42L retighten
  10. Thermostat replacement 
  11. Temp cont valve replacement 
  12. Shut off valve interlock relay replacement.
  13. Underfloor heat replacement 

hello guys, need an opinion to solve this recurring defect. Is there any other step should be done to solve this issue?

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  • 1 month later...

A few questions to narrow the task:

What model aircraft?

Inop as in:

(a) never turns ON stays cold (watch the pressurization system climb/descent gauge) 

(b) gets HOT then turns off

(c) other manifestation?

 

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On 6/13/2021 at 9:10 AM, Farhanz said:

Underfloor heat inoperative

  1. Underfloor heat thermostat plug remove install.
  2. Underfloor heat switch replacement.
  3. Swtch toggle replace
  4. Corrosion treatment temp cont valve
  5. Thermostat replacement 
  6. Temp cont valve replacement 
  7. Replacement underfloor heat
  8. Wire No H230A20N repair
  9. Terminal 15 at TB42L retighten
  10. Thermostat replacement 
  11. Temp cont valve replacement 
  12. Shut off valve interlock relay replacement.
  13. Underfloor heat replacement 

hello guys, need an opinion to solve this recurring defect. Is there any other step should be done to solve this issue?

EMER DEPRSS & floor heat S/O Valve interlock relay replaced

Best Regards

MUNIR Abbasi

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