58
11 Faults
11.1
Failure messages Megacontrol
Table 44: Faults list Megacontrol
Failure message:
Explanation:
Failure
output:
Failure PT. Dis.
Failure Pressure Transmitter discharge side (value >20mA) replace PT and reset system Urgent
Sys. press.to low
System pressure too long under minimum value (3-5-13)
Urgent
1
Sys press.to high
System pressure too long above maximum value (3-5-11)
Urgent
1
Sys. press.to low
System pressure too long under minimum value (3-5-13)
Non urgent
2
Sys press.to high
System pressure too long above maximum value (3-5-11)
Non urgent
2
No water
No sufficient water or -pressure available at suction side
Urgent
1
No water
No sufficient water or -pressure available at suction side
Non urgent
2
Maintenance req.
Maintenance is required
Non urgent
More pumps fail
More than two pumps out of order
Urgent
No refresh tank #
No water refreshm in tank # (sensed by the flow detector) check precharged air pressure Urgent
Aver temp to high
Average room temperature to high (sensed by the temperature sensor)
Urgent
Curr temp to high
Current room temperature to high (sensed by the temperature sensor)
Non urgent
Temp.failure Pump # Failure pump #. Solve problem and reset the system
Non urgent
Failure valve
Failure supply valve. Solve problem and reset the system
Urgent
Inlet sensor fail
Failure inlet Sensor for level or pressure. (signal out of range) replace Sensor and reset
system.
Urgent
High water level
Water level in receiver tank too high
Non urgent
Crit. water level
Water level in receiver tank critical (near to empty)
Non urgent
Low water level
Water level in receiver tank too low (system shut down for run dry protection)
Urgent
1
Low water level
Water level in receiver tank too low (system shut down for run dry protection)
Non urgent
2
Comm. Error FC #
Communication to variable frequency drive # is broken
Non urgent
Incor. check sum F # FC # Incorrect check sum within the protocol
Non urgent
Temp. sensor fail
Failure Room Temperature Sensor. replace R.T.S. and reset system
Non urgent
24V out of range
Failure message due to internal 24V supply out of range
Non urgent
5V out of range
failure message due to internal 5V supply out of range
Non urgent
3V out of range
Failure message due to internal 3V supply out of range
Non urgent
External off
Failure message due to an external off command
Urgent
Fire alarm
Failure message due to an external fire alarm command
Urgent
Failure VFD
Failure of the VFD drive at discharge mode VFD change-over or VFD fixed one
Urgent
Br. Wire Sens.dis
Failure Pressure Transmitter discharge side (value lower then 4mA) connect or replace
Pressure Transmitter and reset system
Urgent
Br. Wire Sens.Inl
Failure inlet Sensor for level or pressure. (wire break detection) Replace Sensor and
reset system.
Urgent
Fail. several FCs
Failure for more than one FC occurs
Urgent
Leakage
There is a leakage in the unit. Solve problem and reset the system
Urgent
Eeprom HW Error
The Eeprom data was not saved due to HW problem
Urgent
Manual off Pump #
off
Not urgent
Manual On Pump #
Not urgent
More Pumps off
Not urgent
Summary of Contents for Megacontrol Series
Page 1: ...Control units Installation and operating instructions Series Megacontrol ...
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