Carrier COMFORT 48VT-A- Manuals

5 55 STEP 1 STEP 2 CL O S E STEP 3 OFF ON MAIN STEP 4 STEP 7 OFF ON MAIN STEP 8 STEP 5 72 STEP 10 STEP 6 STEP 9 O P E N A07662 Fig. 5 -- To Start Unit Gas Heat

7 90 STEP 1 STEP 2 CLO SE STEP 3 OFF ON MAIN A07797 Fig. 8 -- To Shut Off Unit Electric Cooling Defrost Mode When your heat pump is providing heat to your home or office andthe outdoor temperature drops below 45 ° F (7.2 ° C), moisture may begin to freeze on the surface of the coil. If allowed to bu...

8 When installing the new filter(s), note the direction of the airflowarrows on the filter frame, which should be pointing at the indoor coil. 3. Reinstall filter access panel ensuring opening is air and watertight. If you have difficulty locating your air filter(s) or have questions concerning prop...

9 Condensate Drain The drain pan and condensate drain line should be checked and cleaned at the same time the cooling coils are checked by yourdealer. Compressor All compressors are factory shipped with a normal charge of thecorrect type and quantity of refrigeration grade oil. A compressor should r...

10 Before you call for service... ...check for several easily--solved problems. If insufficient heating or cooling is suspected: ( ) Check for sufficient airflow. Check the air filter for dirt. Check for blocked return--air or supply--air grilles. Be sure they are openand unobstructed. If these chec...