After Sales Service; Error Code - universalblue UAP1903-21 Manual De Instrucciones

 Check that the partition plate stop and the base stop are installed
correctly.
 Before turning the unit on, make sure the air filter is in the correct
position. If the equipment is operated without the air filter, dust
and other objects will cause the air conditioning to malfunction.
IF IT'S GOING TO BE UNUSED FOR A WHILE
 Turn off the air conditioner and disconnect it from the power
supply.
 Maintain the air filter and other parts correctly.
 Open the partition plate stop and the base stop for draining
water from the partition plate and the base. Then run the unit
in fan mode for half an hour to ensure that the divider plate
and base are dry.
 Use a plastic sheet to cover the unit to prevent dust or dirt from
entering the unit.

7. AFTER SALES SERVICE

Before contacting the technical service, please read carefully the
following notes on possible problems that the device may present
and how to solve them easily.
Error codes:

ERROR CODE

E1
E2
E3
Error of the coil's temperature sensor
Error of indoor temperature sensor
Anti-freezing protection: temperature of
the coil is too low and the whole AC is off.
When temperature increase to 8º or
more the appliance is working correctly
again
PROBLEM
50