Johnson Controls Y75AA-3 Flame Sensor Probe 1-1/4"

SKU: Y75AA-3 1-Y75AA-3 Brand:
Johnson Controls
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Specifications:

  • Flame Sensor, 1-1/4" Probe,
  • 1/4" Tab Ternial 90 Degree.
  • Fits Pilot Burners # 51-1192 & 51-1193
  • Anets
  • Blodgett Dfg, 100, 200, 300, Cos-5, Bcs-8G, Cos-20G
  • Mg32S, Mg3270, Mt2136G, Mt3255, My3855G, Mt3870.
  • Falcon
  • Lang Oven Gcc0-(A,Ap,Ap-Xd), Gcco-C
  • (Beg With S/N V90069 & X To X90068),
  • Gcco-(C-Xd,Prsn-Pk,S,Sii,Sii-Xd,T,T-Xd).

Description

The Johnson Controls Y75AA-3 Flame Sensor Probe 1-1/4" works by sensing the presence of a pilot flame by spark rectification in which the ionized gas in the fire is used to complete an electrical circuit. This part provides a continuous signal to the ignition control unit, which enables the gas valve to be open only when a flame is present. The hardware is attached to the assembly directly, with the 1-1/4" tester tip being placed strategically in the flame path.

Dimensions:

  • Weight: 0.03 lbs
  • Length: 3.25 in
  • Height: 0.25 in
  • Width: 0.25 in

ANETS:

P8905-33

BLODGETT:

18256 BL18256

FALCON:

536003328

HENNY PENNY:

76978

JOHNSON CONTROLS:

Y75AA3

LANG:

2E-41100-07 41100-07

PITCO:

P8905-33

STAR MFG:

2E-41100-07 2E41100-07

STERO:

STA2E-41100-07 STA2E41100-07

Step1: Shut off power and gas supply, then confirm the burner system is fully cool.

Step2: Remove the existing flame sensor and note wiring placement on the terminal.

Step3: Install the new flame sensor into the same bracket, ensuring correct flame exposure position.

Step4: Reconnect the terminal securely, avoiding loose or oxidized connections.

Step5: Tighten mounting hardware so the probe remains stable in the flame path.

Step6: Restore power and gas, then check flame detection and proper shutdown response.

  • What maintenance is required for the Johnson Controls Y75AA-3 Flame Sensor?

    The flame sensor should be cleaned regularly to remove carbon buildup that can affect flame detection accuracy. Inspect the probe for corrosion or physical damage. Ensure all electrical connections are tight and secure. Proper maintenance improves ignition accuracy and system safety.

  • What are common issues with the Johnson Controls Y75AA-3 Flame Sensor?

    • Carbon buildup causing weak flame detection.
    • Corroded or damaged probe reducing sensitivity.
    • Loose or faulty electrical connections.
    • Intermittent ignition failure or shutdowns.
    • Misreading flame presence leading to safety lockouts.
    • Terminal damage affecting signal stability.

Customer Reviews

5 Based on 1 reviews
5 ★
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1 review
  • Accurate Sensor
    Katlyne —

    Consistent, dependable sensor for heating systems

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