FIELD REPAIR/SERVICE
BLANKETROL II, Model 222S
OPERATION AND TECHNICAL MANUAL
Page 87 of 110
5-19. TROUBLESHOOTING GUIDE
TROUBLESHOOTING GUIDE
OBSERVATION
POSSIBLE
PROBLEM
ACTION TO BE TAKEN
A. The power switch of the
BLANKETROL II unit is
set on, in “I” position,
but does not light; the
membrane control
panel is blank.
Unit is unplugged
No line voltage
Check that the power cord is
plugged into a properly grounded
hospital grade receptacle.
Check for possible short in
electrical system.
B. Each time the
BLANKETROL II unit is
set in "I" position, it
snaps to the "O"
position.
The circuit breaker built
into the power switch is
defective or tripped.
Check amperage at switch.
a. If the amp reading is less
than 15 amperes, the circuit
breaker may be defective.
b. If the amp reading is greater
than 15 amperes, check the
amp reading of the
compressor and the heater.
c. Check for short in unit.
C. The power switch is set
to "I" position and lights
up, but the membrane
control panel is
blank/inoperable.
The transformer is
defective.
The microprocessor board
is defective.
Replace the transformer and or the
microprocessor board.
D. The power switch is set
to "I" position and lights
up. The SETPOINT/
STATUS display lights
but the buttons are
inoperable.
The 9-pin cable (J7
position on microprocessor
board) between the
microprocessor board and
membrane control panel is
disconnected.
Reconnect the 9-pin connector.
See Section (5-14.).
Summary of Contents for CSZ Blanketrol II 222S
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