flamco logoEco A2RXE, Technical Information For Installation And Operation

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7.11 Heat Meter
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functionality. You can scroll through the menu by shortly pressing the black button next to the display. The serial number (8
digit number) can be found as shown in the picture.
7. Service
6 RAM40 1234 5678
Heat Meter
Quick Mode
Type 775
0102
LCD Loop3: Installation
Class 2
E2 / M2
IP 54
The Table shows the list of error codes which might be
shown on the display. “E-7“ is the general error that is
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comprehensive manual for the heat meter.
Error code Description
C -1
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E1 Temperature range exceeded [-19.9 °C ... 199.9 °C] e.g. sensor
cable short circuit
E 3 ** Flow and return sensors inverted/confused
E4 Hardware fault in ultrasonic unit, e.g. transducer or trigger
faulty or short circuit
E5 Reading interval too short. No communication possible.
E 6 **
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E7
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E8 No (mains) power supply, running on the backup battery
E9 Battery discharged
E A* Leakage, broken pipe
Eb * Leakage, heat meter
EC * Leakage, pulse input 1
Ed * Leakage, pulse input 2
* optional, ** application dependent
7.12 Troubleshoot (technician)
7. Service
Complaint LED indication light Cause Solution
Leakage
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Coupling nut shows leakage Coupling nut is loose Fasten coupling nut
Gasket is missing Replace gasket
Temperature sensor shows leakage O ring is missing Fit original
O ring is damaged Replace original
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Coupling is loose
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Space heating does not warm up
Radiator does not warm up LED does not light up No power at power source Check power source
Unit is not connected to power source Connect the unit to the power supply
Power cables not properly connected to
electronic regulator
Connect the power cables to the electronic
regulator
Fuse is broken Check for any short-circuit problems and
replace fuse (3A)
Failure in the electronics Contact your supplier
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Tap is opened, unit is in tapping operation Close Tap
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Sensor(s) are not connected or bad contact Check wire tree connections and connect the
sensors properly, then restart electronics
Sensor(s) defect Replace broken sensor and restart electronics
Possibly faulty electronic cables or electronics Contact your supplier
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Unit is in service mode Remove USB cable
Reset the unit by removing and then
reconnecting the power supply
No heating demand from the room thermostat Set the room thermostat to a higher
temperature than the actual room temperature
Radiator valves are closed Open radiator valves
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Thermostat cable not properly connected to
room thermostat
Make sure the room thermostat is connected
properly
Short circuit connector of the room thermostat
is not connected or missing (when HIU is not
connected to room thermostat)
Connect the wire ends of the room thermostat
connection cable with a short circuit connector
Air in the SH system Air vent the HIU and the SH system
Pressure in SH circuit is too low Set SH pressure to 2 bar. This might indicate a
leakage in the SH system or a broken expansion
vessel. Check SH system for any leakages and
expansion vessel
Pressure or temperature of the DH system are
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Check temperature and pressure of the DH
system
The SH pump is not active (LED on pump does
not light up)
Check if the pump cable is properly connected
to the electronics
The SH pump is jammed or broken Contact your supplier
Optional anti-fraud valve is closed Anti-fraud valve is not electrically connected or
powered
Anti-fraud valve is jammed or broken. Replace
this component
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adjusted
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Filters are blocked
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SH heat exchanger is blocked Replace SH heat exchanger
Cables of the control valves are mixed up Connect cables properly. Orange/red connector
must be connected to the SH control valve
Possible defect in control valve Replace control valve