Honeywell MN Series User Manual page 21

TROUBLESHOOTING GUIDE (CONTINUED)
PROBLEM POSSIBLE CAUSE
Heating function not
activated yet.
The ambient temperature
is too high.
*
Heater is not
switching ON.
Heating is activated
only when the ambient
temperature is below
25°C (77°F).
SOLUTION
Check that the Heating function has been activated.
will be illuminated when the
Heater is switched ON.
Switch on the Heating function when the ambient
temperature reaches below 25°C (77°F).
*Applicable for models with Heating feature only.
EN EN 16