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0513 IH-3778

PAGE 1 OF 10

READ THIS SECTION BEFORE ATTEMPTING TO 

OPERATE AIR CONDITIONER. UNIT MUST BE 
UPRIGHT ONE HOUR PRIOR TO OPERATING.

The power supply cord contains a current device that 

senses damage to the power cord. To test your power 

supply cord do the following:

1.  Plug in the Air Conditioner.

2.  The power supply cord will have TWO buttons on the 

plug head. Press the TEST button. You will notice a 

click as the RESET button pops out.

3.  Press the RESET button. Again you will notice a click 

as the button engages. (See Figure 1)

4.  The power supply cord is now supplying electricity to 

the unit.

NOTE:  Do not use this device to turn the unit 

on or off. Always make sure the RESET button 

is pushed in for correct operation. The power 
supply cord must be replaced if it fails to reset 
when either the TEST button is pushed, or it 

cannot be reset. A new one can be obtained 

from the product manufacturer. If power supply 

cord is damaged, it CANNOT be repaired. It 

MUST be replaced by one obtained from the 
product manufacturer.

OPERATING INSTRUCTIONS

ACCESSORIES INCLUDED

H-3778 
H-3779

PORTABLE AIR 
CONDITIONER

1-800-295-5510

 uline.com

π

Figure 1

Exhaust Hose x 1

NOTE: Check that all accessories are included in the package 
and please refer to the installation instructions for their usage.

Unit/Exhaust Adaptor A x 1

Window/Exhaust Adaptor B x 1

Foam Seal x 3

Battery (For Remote Control) x 2

Safety Lock x 1

Remote Control x 1

Window Sliding Kit x 1

½" Screw x 4

½" Screw Hex Head 

Cap Screw x 2

¾" Screw x 2

Summary of Contents for H-3778

Page 1: ... or off Always make sure the RESET button is pushed in for correct operation The power supply cord must be replaced if it fails to reset when either the TEST button is pushed or it cannot be reset A new one can be obtained from the product manufacturer If power supply cord is damaged it CANNOT be repaired It MUST be replaced by one obtained from the product manufacturer OPERATING INSTRUCTIONS ACCE...

Page 2: ...f rushing air being moved by the fan Gurgling or hissing noise may be heard due to refrigerant passing through evaporator during normal operation Sound of Rushing Air Gurgle Hiss High pitched Chatter Vibration Control Panel Remote Control Room Air Discharge Caster Carrying Handle Both Sides Remote Control Storage Door Exhaust Air Outlet Air Intake Dehumidifying Drain Outlet Bottom Tray Drain Outle...

Page 3: ...3 and screw the hose to adaptor A See Figure 4 4 Extend the other side of the hose and screw it to adaptor B See Figure 5 5 Slide the assembly onto unit See Figure 6 6 Affix the adaptor B into the window slider kit and seal See Figures 7 8 The hose can be extended from its original length of 15 up to 55 but it is the best to keep the length to minimum required Also make sure that the hose does not...

Page 4: ...o secure the window slider kit to the window sash See Figure 13 5 Secure the window slider kit to the window stool See Figure 13 A For wooden windows Use screws for securing B For Vinyl Clad windows Use hex head cap screws for securing 6 To secure lower sash in place attach right angle sash lock with 12 77mm screw as shown See Figure 14 NOTE It is difficult to lock the windows with the sash lock f...

Page 5: ...Figure 18 3 Close the sliding sash securely against the window slider kit See Figure 19 4 Drive two screws to secure the window slider kit to the window sash See Figure 19 5 Drive two screws to secure the window slider kit to the window sash See Figure 19 6 Cut the foam seal to an appropriate length and seal the open gap between the sliding sash and outer window sash See Figure 20 7 To secure the ...

Page 6: ... and new batteries Do not mix alkaline standard carbon zinc or rechargeable nickel cadmium batteries 2 This device complies with Part 15 of the FCC Rules Operation is subject to the following two conditions 1 This device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation NOTE The RESET button is depre...

Page 7: ...ATION You can set both delay stop and delay start while unit is in ON position or OFF position When unit is in ON position first press TIMER button to go to delay stop setting then timer off light will illuminate Tap or hold the UP arrow or the DOWN arrow to change delay stop timer at 0 5 hour increments up to 10 hours then at 1 hour increments up to 24 hours Then press the TIMER button to confirm...

Page 8: ...temperature sensor has failed Contact Uline Customer Service If the display reads E4 the display panel communication has failed Contact your Uline Customer Service If the display reads P1 bottom tray is full Carefully move the unit to a drain location remove the bottom drain plug and let the water drain away Restart the machine until the P1 symbol disappears If error repeats call for service DRAIN...

Page 9: ... or fire hazards AIR FILTER CLEANING This unit has three filters filter A B and C Grasp the upper panel tab and take off the filter A behind the grill of the back panel See Figure 24 Remove the lower filter B and C by loosening the screws Take down the air inlet grille then remove the air filter See Figure 25 26 Wash the filter using liquid dishwashing detergent and warm water Rinse filter thoroug...

Page 10: ...r Refer to Care and Cleaning section page 9 To defrost set to FAN ONLY mode Temperature is set too low for nighttime cooling To defrorst the coil set to FAN ONLY mode Thent set temperature to a higher setting Exhaust duct not connected or blocked See EXHAUSTING HOT AIR section page 3 Air conditioner cooling but room is too warm NO ice forming on cooling coil behind decorative front Dirty air filte...

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