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Figure 6F—RFU Code 8
TROUBLESHOOTING CHARTS
43
Yes
No
Faulty signal lines
between
control/display
board and RT2.
Repair/replace
the
control/display board.
Repair/replace
the
control/display board.
Suspect
temperature
measurement
circuitry.
Is it
between
811 and 7355
ohms
?
Run machine. If RFU condition
(RFU Code 8) reappears, unplug
machine and measure resistance
between pins 10 and 11 of J1 on
back of control/display board.
Insure integrity of control/display
board to power supply board
connections. Insure integrity of
base to power supply board
connections.
Yes
Yes
No
No
Suspect controller failure
caused RT2 to actually
read outside
32°F to 122°F
(0°C to 50°C) range
(811 to 7355 ohms).
Is RT2
temperature
between 32°F and
122°F (0°C and
50°C)?
Suspect RT2.
Repair/replace.
Is it
between
811 and 7355
ohms
?
Measure
resistance between
pins 3 and 5 of
connector P6.
Disconnect
connector P6 from
J2 on power supply
board.
RFU CODE 8
Blanket probe
reading faulty
SERVICE MANUAL
Medi-Therm II
Содержание MEDI-THERM II MTA5900 Series
Страница 76: ...SERVICE MANUAL Medi Therm II www gaymar com P N 10187 000 7 98 SERVICE INFORMATION Figure 13 Test setup 72...
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Страница 83: ...MEDI THERMTM II IS MADE IN THE USA www gaymar com...