SERVICE MANUAL for MODEL AirV Rooftop Air Conditioning Systems

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3.4.2 Ceiling Grill RemovalTo remove the ceiling grill (Figure 3--2) do the following:a. Before working on unit place the master switch in theOFF position and disconnect all electrical power.b. Remove 4 screws located on the ceiling grill, makingsure to support the weight of the grill.c. Lower the ceiling grill from the ceiling panel.d. To replace the grill, place the grill up against the ceilingpanel and align the screw holes in the grill with theceiling panel.e. Replace 4 screws.Heat StripConnectionHeater AssemblyOptionFigure 3 -4 Ceiling Panel With Heat Option3.4.4 Master Control SwitchMountingScrewsFigure 3 -2 Ceiling Grill - Free Blow3.4.3 Ceiling Panel RemovalTo remove the ceiling panel (Figure 3--3) do thefollowing:a. Remove the ceiling grill. (Refer to paragraph 3.4.2.)b. Remove 5 screws securing the duct plate to the ceilingpanel.c. Remove 4 mounting bolts making sure to support theweight of the ceiling panel.d. Disconnect the unit harnesses and main power wiresfrom the ceiling panel.e. Lower the ceiling panel from the air conditioning unit.f. Reverse above procedure for reassembly.Air Sweep CamTo remove the master control switch, do the following:a. Remove ceiling grill. (Refer to paragraph 3.4.2.)b. Remove 5 screws that secure the control assembly(Item 2, Figure 1--3) to the control box cover.c. Remove the master control switch knob by grabbingthe outside edge of the knob and pulling it off of theswitch stem.d. Remove 2 screws securing the master control switchto the control assembly.e. Carefully disconnect wires from the master controlswitch. Label wires to aid in reassembly.f. Reverse above procedure for reassembly.Junction BoxWith CoverThermostatAir Sweep SwitchMaster ControlSwitchDuct Plate &Mounting HolesSerial/ModelNumber TagMounting BoltsJunction BoxFigure 3 -3 Ceiling Panel AssemblyFigure 3 -5 Control Box Assembly - Free Blow3.4.5 Air Sweep Switch RemovalTo remove the air sweep switch, do the following:a. Remove ceiling grill. (Refer to paragraph 3.4.2.)b. Remove 5 screws securing the control assembly(Item 2, Figure 1--3) to the control box cover.c. Disconnect wires from the air sweep switch.d. Pinch tabs on either end of the switch and slide out oflower control box cover.e. Reverse above procedure for reassembly.T--298 3--2 10/09
3.4.6 Indoor Thermostat RemovalTo remove the indoor thermostat (Figure 3--6) do thefollowing:a. Remove ceiling grille. (Refer to paragraph 3.4.2.)b. Remove 5 screws securing the control assembly(item 3, Figure 1--3) to the control box cover.c. Remove the indoor thermostat knob by grabbing theoutside edge of the knob and pulling it off of the thermostatstem.d.Remove 2 screws that secure the indoor thermostat tothe lower control box cover.e. Carefully disconnect the 2 wires from the indoor thermostat.f. Remove the sensing bulb from the plastic clip.g. Carefully slide the sensing bulb through the rubbergrommet.h. Remove the thermostat from the control assembly.i. Reverse above procedure for reassembly.ThermostatAir Sweep MotorFigure 3 -7 Air sweep motor3.4.8 Heat Strip Assembly RemovalTo remove the heat strip assembly (Figure 3--8) do thefollowing:a. Remove ceiling grille. (Refer to paragraph 3.4.2.)b. Unplug electrical connection at air sweep motor assembly.c. Remove two screws securing heat strip assembly tothe ceiling panel assembly.d. Slide heat strip assembly away from air sweep motorassembly and pull down, easing the the electricalconnection through the access hole.e. Reverse the procedures for reassembly.Sensing BulbFigure 3 -6 Indoor Thermostat3.4.7 Air Sweep RemovalTo remove the air sweep, do the following:a. Remove ceiling grille. (Refer to paragraph 3.4.2.)b. Remove cam (See Figure 3--3) from air sweep motorshaft.c. Remove 4 screws securing air sweep motor bracketto the ceiling panel assembly.d. Carefully disconnect air sweep motor wire terminations.e. Remove 2 screws securing air sweep motor(Figure 3--7) to control box and remove motor.f. Reverse above procedure for reassembly.Heat StripFigure 3 -8 Heat Strip Assembly10/093--3T--298
Page 1 and 2: RTransport Air Conditioning2P12BLKB
Page 3 and 4: SAFETY SUMMARYGENERAL SAFETY NOTICE
Page 5 and 6: CAUTIONDo not use carbon tetrachlor
Page 7 and 8: TABLE OF CONTENTS - Continued:SERVI
Page 9 and 10: LIST OF FIGURES - Continued:Figure
Page 11 and 12: SECTION 1DESCRIPTION1.1 INTRODUCTIO
Page 13 and 14: TABLE 1 -2 MODEL CHARTCEILING UNITM
Page 15 and 16: 123451.2.CoverCondenser3. Evaporato
Page 17 and 18: 12395647810111.2.Cover AssemblyScro
Page 19 and 20: 1.4 SYSTEM (UNIT) INSTALLED DIMENSI
Page 21 and 22: 3.6”14” Opening24.1”1.65” 1
Page 23 and 24: 12354SCHEMATIC VIEW15SUPPLY AIR123S
Page 25 and 26: 1.6 AirV SYSTEM COMPONENT SPECIFI-C
Page 27 and 28: passes into the accumulator. The ac
Page 29 and 30: SECTION 2TROUBLESHOOTINGFor ducted
Page 31 and 32: SYSTEM AND PROBABLE CAUSEPROBABLE R
Page 33: SECTION 3SERVICE AND MAINTENANCE3.1
Page 37 and 38: 115V AC12V DCPCB DisplayHolding Cli
Page 39 and 40: 3.5.9 Heat Pump ThermistorsOn the H
Page 41 and 42: c. Gently pry 4 snap clips open and
Page 43 and 44: 3.6.9 Capacitor Testing and Replace
Page 45 and 46: Evaporator CoilRetainingRingFigure
Page 47 and 48: NOTEWhen reassembling the blower wh
Page 49 and 50: 3.8 THERMOSTAT INSTALLATION AND STA
Page 51 and 52: 3.12.2 Timeguard TimerA 3--minute t
Page 53 and 54: UPPER UNITFactory WiringField Wirin
Page 55 and 56: {115 VACSUPPLYWIRE“HOT”“NEUTR
Page 57 and 58: PLUG CONNECTS TO CEILING UNIT.SEE D
Page 59 and 60: “HOT”“NEUTRAL””GROUND”F
Page 61 and 62: TTHERMOSTAT INSTALLATION AND START-

SERVICE MANUAL for MODEL AirV Rooftop Air Conditioning Systems

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