Troubleshooting
MAINTENANCE
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5-3. Troubleshooting Flowchart
❋ The description in this section relates to a unit which is equipped with an oxygen controller and a weight
monitor unit (not requiring official verification). Please skip any reference unrelated to your unit.
5-3-1. Troubleshooting When the Unit Cannot Be Controlled Properly
Trouble
The incubator air temperature
does not rise.
The incubator air temperature
rises too high.
Humidity does not rise.
Humidity rises too high.
Action to take
1. Check that the incubator air temperature is not set too low.
2. Check that the unit is not installed in the current of an air-conditioner or by
a cold window. Avoid installing the init in such a place in order not to cause
a heat loss to the environment.
3. A temporary temperature drop might have been caused by opening and
closing an admittance panel. Wait for a while and check the unit again.
4. Check that the supply voltage is not low. The incubator should not share a
power outlet with another device.
5. Check for a fan alarm message on the display.
6. The incubator air temperature does not exceed 38˚C in the servo control
mode.
The incubator air temperature does not exceed 39˚C in the servo control
override mode.
1. Check that the incubator air temperature is not set too high.
2. Check that the unit is not installed in direct sunlight or near a heating appa-
ratus. Avoid installing the unit in such a place so that it may not be affected
by external thermal conditions.
3. Check that the air inlet in the unit is not blocked by a diaper, gauze, etc.
4. A temporary temperature rise might have been caused by opening and clos-
ing an admittance panel. Wait for a while and check the unit again.
5. Check that the incubator air temperature is not set too low relative to the
room temperature. Set the temperature at least 3˚C higher than the room
temperature.
6. Check that neither a phototherapy unit nor a heating humidifier is in use.
Set the temperature at least 5˚C higher than the room temperature when
these units are used.
7. The incubator air temperature may rise due to the heat generated by the
infant itself.
1. Check that the relative humidity is not set too low.
2. Check for the “humidity chamber off alarm” indicator.
3. Check for the “no water alarm” indicator.
4. Check that the steam port in the unit is not blocked.
1. Check that the relative humidity is not set too high.
2. Check that the relative humidity in the room where the unit is installed is
not extremely high.
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