Product Manual, Issue 6 CMS200
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4.6 Refrigeration system failure alarms
Refrigeration system failure (rSF) alarms trigger if the set point (SP) temperature is not reached within the
time dened by the compressor runtime (Ct) parameter.
The limp home aspect of this alarm ensures that the cooler continues to operate with limited disruption to
the end user. The refrigeration system will operate - cooling the products - while a service engineer visit is
scheduled.
The table below describes how the CMS200 controls the cooler during this time and what the end user will
see:
Audio alarm Display
Audible alarm sounds for ten seconds every compressor cycle
(compressor switches ON or OFF) - if the buzzer is enabled.
In Ready mode
In Saving mode
While the above is displayed, the controller is managing the compressor and the fans:
` The compressor cycles fteen (15) minutes o, then ve (5) minutes on.
` The fan switches on with the compressor on cycle, then cycles when the compressor is in the
o cycle as set by the FCO (fan cycle on) and FCF (fan cycle o) parameters.
The fault clears and normal operation resumes when one of the following occurs:
` The appliance sensor temperature reaches SP (set point)
` The power is cycled to the controller - restarting the Ct (refrigeration system failure) timer
once the compressor switches on.
` The Down button is pressed.
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