Danfoss AK-CC 750A User Manual page 91

Documentation on saving
It is possible to read the number of planned defrosts and the
number of cancelled defrosts.
Alarms
• Appliance not defrosted
If this function detects ice formation shortly after defrost, the
"Appliance not defrosted" alarm is generated. This error may be
due to the evaporator not being defrosted correctly as a conse-
quence of faults in heating elements or fans. After this alarm, the
function will not cancel defrosts.
This alarm is removed at the start of the next defrost, at which
point cancellation of defrosts will be permitted again.
• Air flow reduced
If this function detects severe ice formation on the evaporator,
the alarm "Appliance X – air flow reduced" is transmitted. This er-
ror will typically be due to severe ice formation on the evapora-
tor, but it may also be due to reduced air flow as a consequence
of severe over stacking of goods or dropout of fans. After this
alarm, the function will not cancel defrosts.
This alarm is removed at the start of the next defrost, at which
point cancellation of defrosts will be permitted again.
• Sensor error
The controller cannot carry out a tuning calculation for use in
the adaptive defrosting.
After this alarm, the function will not cancel defrosts.
This alarm is removed at the start of the next defrost, at which
point cancellation of defrosts will be permitted again.
• Flash gas alarm
This function will monitor whether there is any flash gas at the
expansion valve. If flash gas is detected over a fairly long period,
the alarm "Appliance X – Flash gas alarm" is triggered.
This alarm is removed when flash gas disappears or at the start
of the next defrost.
• Valve
The function is suitable for application of a valve from Danfoss.
Valves from other manufacturers is not recommended.
AK-CC 750A RS8HP102 © Danfoss 2018-09 91