Techem vario 4.1.3 Manual De Instrucciones página 23

Seal the housing lid.
5
Installation of the power supply unit
1 Release and remove the four Torx screws (T20) from the housing lid and remove the
cover.
2 Place the power supply unit in the lower part of the computer unit on the left-hand
side.  10
Attach the connector plug to the connector PCB.
3
Guide the supply cable into the lower part of the computer unit through the entry
4
grommet on the left-hand side.
5 Connect the supply cable to the supply clamps, place the clamp cover on top and
screw it down firmly with screws.
6 Close the device cover and screw together (recommended tightening torque 1.8 Nm).
!
If a power supply unit is used, clamping may under no circumstances whatso-
ever be made between the two phases as this would destroy the power supply
unit. Touch protection can be installed at all times. The supply line must be
secured with a maximum of 6 A and against manipulation.
Displays/operation
Using the push button, you can switch through the individual displays, please refer to the
chapter Display levels.
Info codes
If an error occurs, the info code will be displayed in the main ribbon. By pressing the
button, you can still select all other windows.
Code Meaning
C-1 The meter has a permanent fault and must be replaced. The readout values cannot be used.
E-1 Faulty temperature measurement
• Outside the temperature range
• Sensor short circuit
• Sensor breakage
• Swap the device.
E-2 Radio communication permanently defective. The current value read at the meter (not the
due date value) can be used. The meter must be exchanged.
E-3 Return sensor registers a higher temperature than the flow sensor.
(Heat meter)
Return sensor registers a lower temperature than the flow sensor.
(Cold meter)
E-4 Flow sensor faulty. Swap the device.
E-5 Reading via the optical interface too frequent. The meter measurement is perfect. - In order
to save electricity, the optical interface is out of operation for about 24 hours.
23