19
Section 9 - Troubleshooting
Figure 7 - Troubleshooting Chart - NO HEAT
Always perform the
FUNCTIONAL CHECK
AND SAFETY INSPECTION
after making
repairs and before returning the Power Unit
to patient use.
Failure to perform the
FUNCTIONAL CHECK AND SAFETY
INSPECTION
could result in patient injury.
WARNING
In addition to the following troubleshooting
charts, refer to
PREVENTIVE MAINTENANCE
(section 6, p. 7) and
REPAIR PROCEDURES
(section 10, pp. 21-23).
NO HEAT
DOES
QUILT
INFLATE?
GO TO NO AIR FLOW
SYMPTOM
PRESS
EACH SETTING
BUTTON. DOES
CORRESPONDING
LED LIGHT?
CONTACT
YOUR DEALER
UNPLUG UNIT;
MEASURE HEATER
RESISTANCE
IS
HEATER
RESISTANCE
BETWEEN 7.5
AND 8.3
OHMS?
REPLACE HEATER
UNPLUG RT1
THERMISTOR
ASSY. TURN
POWER ON.
DOES
UNIT HEAT?
SUSPECT PC
BOARD; CONTACT
TECHNICAL SERVICE
REPLACE RT1
THERMISTOR ASSY
SYMPTOM:
NO
YES
NO
YES
NO
YES
NO
YES
