31
Type Text in display Description/ cause How to remedy alarms
a Compressor threshold Compressor started too many times
within one hour
Adjust start to start and stop to
start times
k Heater frost alarm Temperature on water heating coil
element (T9) has been below 2°C)
Check air and water flows
k Heater frost long alarm Frost thermostat on water heating
coil has been pressed for more than
5 minutes
Check air and water flows
a Heater frost warning Frost thermostat on water heating
coil has been pressed for less than
5 minutes
Check air and water flows
k Heater overheat alarm Boiling fuse on electrical heating coil
has been activated
Check air flow
a Filter Extract warning Air extract filter needs changing/
cleaning
Change/clean filter
a Filter Supply warning Supply air filter needs changing/
cleaning
Change/clean filter
k Dbm RTDB ver.is not equal of Board
RTDB
Display RTDB not same as Controller
RTDB
Check settings and unit type. Update
SW and reload configuration file.
Requires PC application
i System has been stopped States unit stop
i System has been started States unit start
Undefined error Undefined/unknown error Call Service