COMPACT 1.4
EN
Symptom
• If the display does not turn on or in operation
the display and the device turn off.
• When turning on device or during operation
the display shows E0 alternating with CA
(fault in return air probe). During this error
the device works, but does not regulate
return air probe (and the temperature cannot
be raised or lowered). To turn off press the
ON/OFF button once on the keyboard or the
control.
• When the unit starts up or runs, it gives out
a beeping sound followed by the display
showing Lb (battery running low). The unit
shuts down automatically.
• Fuse blown or unplugged (in 24V - 25A /
12V - 50A power cable).
• Electronic control faulty.
• Power cable not connected, with faulty
contact or cut.
• Electronics power fuse (24V - 10A / 12V -
20A) disconnected or blown.
• Power cable polarity inverted.
• Bad connection on terminals or cables of
the return air probe.
• Return air probe disconnected or faulty.
• Poor contact in power terminals or
connections.
• Battery discharged or defective.
14
Cause