Technical Paper
Danfoss eTRV E-error codes description
Alarm code |
Problem |
Solution |
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E1 |
Top PCB sensor error |
The temperature sensor is damaged, return to a dealer |
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E2 |
Side PCB sensor error |
The temperature sensor is damaged, return to a dealer |
E6 |
Motor error |
Motor jammed, try to remove/insert battery, if the error |
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persists try to reset, if still no positive result return to a dealer. |
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Note! The eTRV will retry after 20 min. |
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The error code will be on the display, until cleared by the controller |
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E8 |
Invalid communication (Bluetooth/ZigBee) |
Try to remove/insert battery, if the error persists try to reset, if |
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still no positive result return to a dealer. |
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E9 |
Valve closing ability |
It looks like the valve cannot be closed correctly, please check |
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the installation |
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Danfoss Icon™ E-error codes description
Alarm code |
Problem |
Solution |
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Er03 |
You have set-up a cooling application that |
Please go to the thermostat in the desired reference room and |
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requires a reference room thermostat to be |
enter the thermostat installer menu. Set thermostat to ON in |
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appointed. |
ME.6 “reference room thermostat”. |
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Er05 |
Communication lost to Radio Module. |
Please check that the cable is properly connected in the Radio |
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Module and Danfoss Icon™ Master Controller 24V. |
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Er06 |
Communication lost to room thermostat. |
Identify the room thermostat by looking at the flashing |
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outputs on the Danfoss Icon™ Master Controller 24V, or look |
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at the thermostats. Wake up thermostat, then press |
on the |
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thermostat. Faling thermostat will say “NET ERR”. |
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In some cases it is necessary to add a repeater to establish a |
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better wireless communication between the Master Controller |
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and Thermostat. |
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Replace batteries on room thermostat and perform a network |
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test (activate NET TEST in menu ME.3 on room thermostat). |
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Er07 |
Communication lost to Slave Controller. |
If wireless, check Radio Module connection to Danfoss |
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Icon™ Master Controller 24V. If wired system, check the wire |
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connecting the controllers. |
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Er08 |
Communication lost from Slave to Master |
If wireless, check Radio Module connection to Danfoss |
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Controller. |
Icon™ Master Controller 24V. If wired system, check the wire |
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connecting the controllers. |
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Er10 |
Communication lost to Repeater. |
Check that the repeater is plugged into outlet / has not been |
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removed and outlet is ON. |
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Er11 |
Communication lost to Expansion Module. |
Check that Expansion Module is slidded fully into place. |
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Note! The Master controller must be turn off and on again in order |
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to register the expansion module. |
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Er12 |
Actuator defective. |
Replace actuator. |
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The defective actuator output is flashing. |
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Er14 |
A Danfoss Icon™ Master Conroller cannot |
This Danfoss Icon™ Master Controller 24V has to be factory |
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be included as (become) a Slave Controller |
reset to become a Slave Controller. (See description in chapter |
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because one or more room thermostats, |
”Reset or replace a Danfoss Icon™ Master Controller”). |
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repeaters or Danfoss Icon™ Master Controller |
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24V have allready been included. |
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© Danfoss | FEC | 2022.03 |
AM398144307765en-000104 | 1 |
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