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Doc. No. OM-101
Version 1.9: Jan. 16, 2009
36 (40)
TROUBLESHOOTING
3. FAN DOES NOT OPERATE
3.1
Is there a display?
3.4
Is the battery voltage
above 9V in both circuits?
yes
no
Go to:
1. No control unit display
3.3
Reduce set temperature to
confirm that the fan turns on
(perform fan operation test)
no
yes
3.9
Has the fan guard been
damaged?
yes
3.10
Adjust fan guard
position. Fan operating?
Replace container
3.5
Replace batteries
no
3.2
Is the temperature in the
container at least 3°C above
the set point?
yes
no
Replace container
no
3.7
Has the fan frozen?
yes
3.8
Loosen the fan by rotating
the wheel using a screwdriver
or pen.
no
3.6
Is there a fan alarm on
the display? (see Fig. 17)
no
Replace container
yes
Figure 17
Temp 5.0°C
Set temp 5.0°C
Cooling fan alarm