OJ Electronics ETN4-1999, Manual

OJ Electronics A/S

Stenager 13B · DK-6400 Sønderborg

Tel: +45 73 12 13 14 · Fax: +45 73 12 13 13

oj@ojelectronics.com · www.ojelectronics.com

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Error messages

If a fault occurs, the thermostat will display one of the following 
error codes: 

Error 

code

Fault

Remedy

E0

 Internal fault. Ther-
mostat defective. 

Replace thermostat. 

E1

External room 
sensor defective 
or short-circuited 
(terminals 10-11). 

Replace sensor/sensor cable.  
To continue to operate the system 
without sensor, set control type to 
Regulator under Application  
(

APp 

a

C). 

E2

External floor sensor 
defective or short-
circuited (terminals 
8-9).

Replace sensor/sensor cable.  
To continue to operate the system 
without sensor, set control type to 
Regulator under Application  
(

APp 

a

C).

E5

Internal overheating. 
Thermostat shuts off 
heating. 

Check installations. Check that 
heating cables are not overloaded 
or that ambient temperature is 
excessive. When internal tem-
perature drops, the thermostat 
automatically reactivates. 

ETN4-1999  

 English