Specifications
Page 13
Troubleshooting
If problems occur, the rst step should be to verify that the Sherbourn C-12 is attached to an
appropriate (Sherbourn supplied) AC adapter (“power brick”), and that the AC adapter used is rated
for the local AC line voltage.
Note: If a cable is connected to the Trigger Input of the C-12, but not connected to a
triggering device, the C-12 will not act as expected with the Trigger switch in either position.
DO NOT insert a cable into the Trigger In connector unless the other end is connected to an
active device.
Problem: No air ow (fans sound like they are running)
• Verify that the C-12 is congured correctly (mechanical conguration)
Problem: Fans never come on - even at high temperatures
• Verify that, if a remote temperature sensor is used, it is in the warmest spot in the cabinet
• Verify that the Fan Auto-On temperature control is set to the desired temperature.
• Verify that ONLY a remote temperature sensor is plugged into the Temp Sensor connector
(plugging a trigger cable or other cable into this connector will result unpredictable behavior and
possible damage to the C-12)
• Verify that, if a remote device is expected to trigger the C-12, the trigger signal is active and the
Trigger Mode switch in in the 12VDC position.
Problem: Fans run when they shouldn’t
• Verify that the Fan Auto-On temperature control is set to the desired temperature.
• Verify that ONLY a remote temperature sensor is plugged into the Temp Sensor connector
(plugging a trigger cable or other cable into this connector will result unpredictable behavior and
possible damage to the C-12)
• Verify that, if a remote device is expected to trigger the C-12, the trigger signal is active and the
Trigger Mode switch in in the 12VDC position.
• Verify that, if the C-12 is being run in Sync mode, the C-12 unit connected to its Trigger In is
also in Sync mode (and that ONLY another Sherbourn C-12 unit in Sync mode is connected to
its Trigger In.)
Problem: Fans come on, but air ow seems weak
• Verify that the C-12 is congured correctly (mechanical conguration)
• Check if the lter needs cleaning
• If exhaust hoses are used, verify that they are clear of obstruction (and not too long)
Problem: Fans ONLY run at full speed
• Verify that, if a trigger input is used, and the C-12 is not a slave unit to another C-12, the Trigger
Mode switch is not in the Sync position