Slant/Fin Error Hold 91 / Hold 92 / Hold 95: Sensor fault — inlet
A temperature sensor is disconnected or out of range. Hold 91 = inlet sensor (bottom of heat exchanger), Hold 92 = outlet sensor (top of heat exchanger; it contains two sensors), Hold 95 = stack sensor (at the flue pipe inside the cabinet). Documented causes: disconnected sensor or a faulty sensor whose resistance doesn't match the thermistor chart (Table 15-2). We diagnose and repair it across Greater Vancouver — same-day and after-hours.
A temperature sensor is disconnected or out of range. Hold 91 = inlet sensor (bottom of heat exchanger), Hold 92 = outlet sensor (top of heat exchanger; it contains two sensors), Hold 95 = stack sensor (at the flue pipe inside the cabinet). Documented causes: disconnected sensor or a faulty sensor whose resistance doesn't match the thermistor chart (Table 15-2).
Slant/Fin fault codes can vary by model and series. Use this as a guide — the same code can have more than one cause. Our Technical Safety BC–licensed technicians read the code, confirm it against your unit's manual, and diagnose the true cause before any repair.
Likely causes of Slant/Fin error Hold 91 / Hold 92 / Hold 95
- Sensor wiring disconnected at the sensor or at the control board
- Faulty thermistor with resistance outside the spec chart
- Corroded or loose sensor connector
- Damaged sensor lead
What you can safely check
- Note which sensor number is shown for the technician (inlet 91, outlet 92, stack 95)
- Check for obviously loose or disconnected sensor plugs if easily visible
Beyond these checks, do not open the unit or touch gas/electrical parts — BC law requires a licensed gas fitter. Call us for a proper diagnosis.
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Parts often behind Slant/Fin error Hold 91 / Hold 92 / Hold 95
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Slant/Fin Error Hold 91 / Hold 92 / Hold 95 Repair Across Metro Vancouver
Related Slant/Fin Sensors & Temperature Codes
Frequently Asked Questions
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