Cincinnati Sub-Zero WarmAir 135

Questions and Answers

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Mr. Mark BrownJul 31, 2025
How to fix a Cincinnati Sub-Zero Medical Equipment Warming Unit that won't turn on?
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  Samantha BensonAug 1, 2025
  If your Cincinnati Sub-Zero Medical Equipment Warming Unit isn't turning on, start by ensuring the power cord is securely plugged in and undamaged; replace it if necessary. Confirm that the outlet has power. Check the circuit breaker power switch and reset it by turning it off and then on again. Also, check all wire connections to make sure they are secure, including the power cord and base wire harness at the terminal block. Finally, allow the unit to cool in case of overheating, and if the problem continues, check the continuity of each safety thermostat, replacing them if needed.
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karina22Aug 9, 2025
Why is my Cincinnati Sub-Zero Medical Equipment Warming Unit blowing air but not heating?
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  Mary PenningtonAug 9, 2025
  If your Cincinnati Sub-Zero Medical Equipment Warming Unit blows air but doesn't heat, check the thermistor's resistance value at room temperature for each leg (White/Gray & Red/Green); replace the sensor if necessary. Verify the heater header/terminals are secure on the control board (J4) and the main connector (J10/P10). Check the heater wires' resistance (approximately 12 ohms); if open, replace the heater.
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Sophia NunezAug 13, 2025
What to do if Cincinnati Sub-Zero Medical Equipment Warming Unit heats then shuts off?
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  Michelle DavisAug 13, 2025
  If your Cincinnati Sub-Zero Medical Equipment Warming Unit heats up but shuts off before reaching the set temperature, allow the unit to cool from a possible overheat condition. If it persists, check the continuity of the thermostat and replace if necessary. Check the thermistor's resistance value at room temperature for each leg (White/Gray & Red/Green) and replace the sensor if necessary. Ensure the unit has adequate airflow; replace the filter if needed and verify that the blower wheel spins freely after removing the top cover, thermistor, and hose.
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Dana HallAug 18, 2025
Why Cincinnati Sub-Zero Medical Equipment Warming Unit alarms at too low or too high a temperature?
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  smithheidiAug 18, 2025
  If your Cincinnati Sub-Zero Medical Equipment Warming Unit is alarming due to temperatures being too low or too high, check the resistance value of each leg (White/Gray & Red/Green) of the thermistor at room temperature and replace the sensor if necessary. Confirm the unit is being used in an ambient temperature between 15°C/59°F and 30°C/86°F.
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Jeffrey DuranAug 22, 2025
How to fix temperature settings not selectable on Cincinnati Sub-Zero Medical Equipment Warming Unit?
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  Jason LopezAug 22, 2025
  If you're unable to select temperature settings on your Cincinnati Sub-Zero Medical Equipment Warming Unit, remove the top cover and inspect the membrane connection to the control board. If the unit has recently been serviced, confirm the pin to receptacle alignment. Verify continuity between appropriate pin locations.
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Paul DouglasAug 27, 2025
How to reset the hour meter on a Cincinnati Sub-Zero Medical Equipment?
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  amandamonroeAug 27, 2025
  If the Hour Meter light is activated on your Cincinnati Sub-Zero Medical Equipment, check the filter conditions and replace the filter if necessary. Reset the hour meter by holding the "Fan Only" and "High" buttons while turning the unit on.
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hortizNov 3, 2025
What to do if Cincinnati Sub-Zero Medical Equipment Warming Unit turns on but does not blow air?
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  thamiltonNov 3, 2025
  If your Cincinnati Sub-Zero Medical Equipment Warming Unit turns on but doesn't blow air and might be tripping off, begin by checking the air inlet for obstructions; remove the filter and inspect for any blockage, also inspect the screen area around the heater. Clear any debris and replace the filter if necessary. Inspect the connectors and wire harness connecting the motor to the power supply, as well as the incoming line voltage to the power supply; look for loose crimps, broken wires, or terminals that may have pushed out of the connector housings and repair using appropriate terminals and crimping tool. Check if the blower wheel is obstructed; remove the top cover and thermistor, remove the hose and verify that the blower spins freely. Verify connectors and terminals are properly secur...