OJ Electronics MWD5-1999-UAC3, Instructions Manual

© 2022 OJ Electronics A/S

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© 2022 OJ Electronics A/S

Error codes

E0: Internal fault. The thermostat must be replaced.
E1:  Built-in sensor defective or short-circuited. Replace the 

thermostat, or use the floor sensor only.

E2:  External sensor disconnected, defective or short-circuited. 

Reconnect the sensor if disconnected, or replace the sensor.

E5:  Internal overheating. Inspect the installation. 

MAINTENANCE

The thermostat is maintenance free.

Keep the thermostat’s air vents clean and unobstructed at all 
times.

The thermostat may only be cleaned with a dry cloth.

APPROVALS AND STANDARDS
Regulations

OJ Electronics A/S hereby declares that the product is in 
conformity with the following directives of the European 
Parliament:
LVD - Low Voltage Directive
EMC - Electromagnetic Compatibility
RoHS - Restriction of the use of certain Hazardous Substances
RED - Radio Equipment Directive

Applied standards and approvals

According to the following standard: 
EN 60730-1, EN 60730-2-9, EN 300 328, EN 301 489-17,  
EN 301 489-1, EN 62479, EN 50559

Classification

Protection from electric shock must be assured by appropriate 
installation. Must be installed according to the requirements of 
Class II (reinforced insulation).

MWD5-1999-UAC3 English