Troubleshooting
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Type of error |
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Possible error cause |
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Activity/action |
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E0 error in the display |
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Internal error |
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The thermostat must be replaced |
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E1 error in the display |
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Built-in sensor short-circuited or disconnected |
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The thermostat must be replaced |
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E2 error in the display |
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External sensor error |
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Make sure that the sensor cables are correct mounted into the connection terminals of the sensors.
Dismount the sensor and measure the resistance that is the Ohm value.
The sensor must be replaced if there is a great ohm deviation |
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The LED is showing RED (GFCI trips) |
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Ground-Fault |
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Press RESET. If the LED is showing RED again, it may be because the heating cable has connection to ground (Testing can only be performed if the thermostat has a heating demand). Error must be corrected. |
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The LED is showing RED
(GFCI trips) |
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Leak in the heating cable |
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Make sure that the floor of concrete is dry. Error must be corrected. |
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The LED is showing RED (GFCI trips) |
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Lack of balance on the 2 phases L1 and L2.
(only by 240 VAC installations) The voltage difference on the 2 phases must not be more than +/-10%. E.g. L1=132VAC and L2=108VAC |
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Control the cause of error and e.g. spread the load on the house installations in a more appropriate way |
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The LED is showing RED. (nuisance tripping) |
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Bad connection on the connection terminals L1(L) and L2(N). |
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The red led disappears when pressing RESET. The screw terminals must be tightened. |
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No GFCI function and no thermostat function. |
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The supply voltage has been over 275 VAC. E.g. because of bad weather or supply lines. |
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Replace the thermostat |
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The thermostat can not maintain the program |
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Bad contact to the heating cable may cause electrical noise, which can reset the default program |
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The screw terminals on the thermostat must be tightened and the connection must be controlled. |
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The thermostat can not maintain the program |
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A inductive load due to contactor is connected between the GFCI thermostat and the heating cable |
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The contactor is supplied with a RC part between the output terminals of the thermostat. The RC part may be ordered from OJ Electronics A/S. |
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The symbol for heating SSS is showed in the display, but the heating cable gives no heat |
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The heating cable is not connected correctly or it is defect. |
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The heating cable is dismounted from the thermostat terminals. The voltage of the terminals is measured or a lamp is connected to the terminals. If there is voltage on the output terminal, the heating cable must be examined. |
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The heating cable is heating even though there is no need for heating. |
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The thermostat relay is defect |
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Replace the thermostat |
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The symbol for heating SSS is showed in the display, but the heating cable gives no heat. |
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The thermostat relay is defect. |
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Replace the thermostat |
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