Awesome Image

Opening Hours:

Mon - Sat : 9:00 AM to 5:00 PM

Contact:

info@JGRefrigeration.co.uk

Awesome Image

Thermistor Testing

Home/AC Diagnostics/Thermistors
HVAC THERMISTOR DIAGNOSTICS

Thermistor Resistance Calculator

Choose the manufacturer profile and sensor type, set the measured temperature, then compare the expected resistance with your multimeter reading. Always confirm the exact curve against the unit service information where available.

HVAC Thermistor Lab

Resistance vs Temperature

Table interpolation engine with model notes, tolerance band, °C/°F display, and kΩ/Ω output.

Live Diagnostic Mode
Standard Thermistors
High Temperature / Discharge
Target Temperature
25°C (77°F)
In range
-30°C0°C25°C60°C100°C130°C
Fujitsu
Room thermistor
Published room thermistor table values.
Expected multimeter reading
10.00kΩ
10000 Ω
±5% check band
9.50 – 10.50 kΩ
Note: HVAC brands often use different thermistor curves by model and sensor location. This code uses table interpolation and includes exact published Fujitsu values where available, but you should replace any generic diagnostic profile with the exact service-table rows for the model being serviced.
JG Refrigeration
JG Refrigeration
JG Refrigeration
JG Refrigeration
JG Refrigeration
JG Refrigeration

Found a useful service or checklist? Email a link to yourself:

© Copyrights JG Refrigeration 2026. All Rights Reserved