manualshive.com logo in svg

Rheem A17 Series, Installation Instructions Manual

Share
Download
Rheem A17 Series Installation Instructions Manual Download Page 40

40

10.0 DIAGNOSTICS AND TROUBLESHOOTING

10.4 Cooling Mechanical Checks Flowchart

Diagnostics

YES

NO

Pressure

Problems?

Low Liquid

Pressure

Low Suction

Pressure

High Head

Pressure

Goto Electrical 

Checks Flowchart 

Dirty Filters

Dirty Indoor Coil

Inadequate Indoor

Ai ow

Inoperative Indoor

Blower

Low on

Charge

Open IPR

Valve

Low Ambient

Temperature

Bad

Compressor

Indoor Coil TXV Check

Valve Stuck Open - Low

or No Suction Superheat

Dirty Outdoor 

Coil

Inoperative Outdoor

Fan

Overcharge

Recirculation of

r

Noncondensibles

Restricted

Filter Drier

Higher Than Ambient Air

Entering Outdoor Coil

Wrong Outdoor

Fan Rotation

Inadequate Ducts

Restricted

Filter Drier

Outdoor Unit

Running?

Low on Charge

Restricted Indoor

Metering Device

Restriction in

System

Recirculation of

Indoor Air

Wrong Indoor

Blower Rotation

Summary of Contents for A17 Series

Page 1: ...IT READ THESE INSTRUCTIONS THOROUGHLY BEFORE ATTEMPTING INSTALLATION OR OPERATION FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN IMPROPER INSTALLATION ADJUSTMENT SERVICE OR MAINTENANCE POSSIBLY RE...

Page 2: ...coNetTM Control Center or Thermostat Installation 22 4 9 3 EcoNetTM Communication Wiring Connections 22 4 9 4 Conventional24VACThermostatControlWiringConnections 23 4 10 Power Wiring 24 4 11 Grounding...

Page 3: ...ware that the use of unauthorized components accessories or devices may adversely affect the operation of the heat pump and may also endanger life and property The manufacturer disclaims any responsib...

Page 4: ...1 of this manual 2 3 Importance of Quality Installation A quality installation is critical to assure safety reliability comfort and customer satisfaction Strict adherence to applicable codes the info...

Page 5: ...alid an air handler model or indoor coil furnace combination should be selected that is properly matched to the outdoor unit The recommended approach is to select an air handler or indoor coil and gas...

Page 6: ...s LRA Maximum Amperes Minimum Amperes Face Area Sq Ft m2 No Rows CFM L s Net Lbs kg Shipping Lbs kg A1724AJ2CB 208 230 1 60 11 7 11 7 58 3 1 40 16 16 25 25 20 20 19 76 1 84 1 5133 2423 128 3629 160 72...

Page 7: ...y cylinders need to have a 400 2 758 kPa psig service pressure rating DOT 4BA400 or DOT BW400 Combustibility At pressures above 1 atmosphere a mixture of R 410A and air can become combustible R 410A a...

Page 8: ...erformance of other equipment installed in proximity to the unit Maintain all required minimum distances to gas and electric meters dryer vents and exhaust and inlet openings In the absence of nationa...

Page 9: ...r that will not wash off with water 4 2 4 Customer Satisfaction Issues The outdoor unit should be located away from the living sleeping and recreational spaces of the owner and those spaces on adjoini...

Page 10: ...ing Systems To prevent failure of a new unit the existing line set must be correctly sized for the new unit and must be cleaned or replaced Care must be taken so the expansion device is not plugged Fo...

Page 11: ...tical rise is less than the maximum rise of 50 for this application This application is also considered to have a lone line set since 75 exceeds the limit of 0 feet Unit Size Allowable Liquid Line Siz...

Page 12: ...4 0 25 0 99 50 0 97 50 0 95 50 0 93 50 0 91 NR 1 2 3 4 0 25 0 99 50 0 97 50 0 95 50 0 93 50 0 91 NR 3 8 7 8 0 25 1 00 50 0 99 50 0 98 50 0 98 50 0 97 39 0 96 1 2 7 8 0 25 1 00 50 0 99 50 0 98 50 0 98...

Page 13: ...0 97 9 53 3 8 19 05 3 4 0 8 0 99 15 0 97 15 0 95 15 0 93 15 0 91 NR 12 7 1 2 19 05 3 4 0 8 0 99 15 0 97 15 0 95 15 0 93 15 0 91 NR 9 53 3 8 22 23 7 8 0 8 1 00 15 0 99 15 0 98 15 0 98 15 0 97 12 0 96...

Page 14: ...ngths Only use the suction line sizes listed in Table 2 to assure proper oil return Do not oversize the suction line 4 5 5 3 Refrigerant Migration During Off Cycle Long line set applications can requi...

Page 15: ...4 5 7 Capacity Losses Long line lengths can result in a reduction in capacity due to vapor line pressure drop and heat gain or loss Refer to Table 2 for capacity loss multipliers for vari ous vapor l...

Page 16: ...ulating the liquid line is required Use clean dehydrated sealed refrigeration grade tubing Always keep tubing sealed until tubing is in place and connections are to be made A high quality biflow filte...

Page 17: ...g line set with the outdoor unit and indoor unit near the same level the following is required EXV or TXV on the indoor coil Start components may be required depending upon quality of voltage consista...

Page 18: ...to Figure 4 Insulated liquid line in unconditioned space only Insulated suction line full length Follow the proper line sizing maximum linear and equivalent lengths charging requirements and oil level...

Page 19: ...outdoor unit above the indoor unit the following is required EXV or TXV on the indoor coil Crankcase heater Some models have factory in stalled CCH s Refer to tables in Section 4 4 5 6 Start componen...

Page 20: ...a clean dry cloth before soldering Clean out debris chips dirt etc that enters tubing or service valve connections Wrap valves with a wet rag or thermal barrier compound before applying heat Braze th...

Page 21: ...ee Sections 4 7 and 4 8 for evacuation and final leak testing ST A1226 06 00 The suction line must be insulated for its entire length to prevent dripping sweating and prevent performance losses Closed...

Page 22: ...he EcoNet Control Center While they are also designed to be controlled by a conventional 24VAC 2 stage ther mostat many features and benefits are lost 4 9 2 EcoNet Control Center or Thermostat Install...

Page 23: ...information To access any of the control center menus press the settings status or service icons at the bottom of the touch screen Refer to the air handler or furnace installation manual and the EcoN...

Page 24: ...handlers ODD non functional on H2T air handlers 4 10 Power Wiring It is important that proper electrical power from a commercial utility is available at the outdoor unit contactor Voltage ranges for...

Page 25: ...isplayed on the 2 stage Out door Control TSODC If the unit is equipped with a crankcase heater it is recommended to wait at least 12 hours after electrical power is applied to the outdoor unit before...

Page 26: ...installation manual for the location and appro priate dip switch settings When the A17 condensing units are matched to EcoNetTM enabled HMV air handlers or 802V 96V 97V and 98V gas furnaces and are c...

Page 27: ...umetric charging device adjust the refrigerant charge based on the actual line set length If the entire system has been evacuated add the total calculated charge IMPORTANT Charging by weight is not al...

Page 28: ..._ F _____ C as measured from a temperature probe located within 6 15 2 cm outside of the unit on the copper liquid line small line It is recommended to use a calibrated clamp on temperature probe or a...

Page 29: ...oll compressors are used in all A17 condensing units The 2nd capacity stage is activated by a DC signal that energizes an internal solenoid which shifts the compressor to full capacity The 24VAC Y2 si...

Page 30: ...ons See Fig 1 Displays status and diagnostic codes see Status and Diagnostic Description Displays diagnostic fault recall see section 10 1 CAUTION UNIT MAY START SUDDENLY AND WITHOUT WARNING Solid red...

Page 31: ...e is not a command for unit operation from the EcoNetTM Control Center or Thermostat Zero 0 displayed The unit is in standby Command for Compressor Operation The control has an on off fan delay of one...

Page 32: ...te correctly When a control board requires replacement it is important that the replacement board gets the model data from the old control The primary way the replacement control gets this information...

Page 33: ...el and low line voltage conditions Fault codes are displayed on the dual 7 segment display located on the outdoor unit control Faults are also displayed on the EcoNetTM Control Center if one is being...

Page 34: ...reduce light dimming Also see the interconnecting tubing section of this manual to see if the application requires start components 9 3 Compressor Crankcase Heater 2 Ton Models 44 17402 44 without ou...

Page 35: ...a command for unit operation will cause the compressor to run 5 seconds 10 1 1 Test Mode Test Button on the TSODC Enter FAULT RECALL mode by pressing the UP and SELECT buttons at the same time with i...

Page 36: ...C Anti short cycle timer 3 minutes or minimum run timer 30 seconds active The unit as received a command for second stage cooling during and active anti short cycle timer or minimum run timer Wait un...

Page 37: ...out The Outdoor Control detects loss of current in the Run circuit three 3 times in one cooling call Check for damaged miswired or wrong run capacitor Check for broken wires loose connectors or miswir...

Page 38: ...ol has locked out the compressor to protect it Outdoor Control alternately flashes L and 29 48 Open Run Circuit or No Compressor Current Check to ensure power to compressor is correct Check capacitor...

Page 39: ...rtCapacitor Potential Relay Unit Running YES Repair and Recheck YES Repair and Recheck NO Voltage on Compressor Side of Contactor NO YES RunCapacitor NO Voltage on Line Side of Contactor NO Circuit Br...

Page 40: ...harge Open IPR Valve Low Ambient Temperature Bad Compressor Indoor Coil TXV Check Valve Stuck Open Low or No Suction Superheat Dirty Outdoor Coil Inoperative Outdoor Fan Overcharge Recirculation of r...

Page 41: ...s Measurements will be made with the sensor disconnected from the control board Again comparing the results must be done against a calibrated tester A glass of water mixed completely with ice chips an...

Page 42: ...igerant undercharge or undercharge HPC or LPC cycling At compressor terminals voltage must be 10 of nameplate marking when unit is operating Replace Check for correct voltage Add refrigerant Registers...

Page 43: ...eding unit Correct and complete diagnosis High line voltage Power company problem Report problem High head pressure Overcharge Check system charge Dirty outdoor coil Clean coil Faulty or wrong size ou...

Page 44: ...ential relay Run capacitor Check with ohmmeter Internal overload Allow time to rest Compressor windings Check for correct ohms Voltage present on line side of com pressor contactor only Thermostat Che...

Page 45: ...ECK REMEDY Compressor failures Line tubing too large Reduce pipe size to improve oil return Low suction pressure Low charge Check system charge Refrigerant leaks Repair and recharge Cold noisy compres...

Page 46: ...arge Remove noncondensible gases Size liquid line correctly Undersized EXV Replace with correct EXV Incorrect sensing suction line temperature Verify suction thermistor resistance is correct and prope...

Page 47: ...ect sensing suction line temperature Verify suction thermistor resistance is correct and proper ly attached and insulated to the suction line Suction thermistor incorrectly calibrated Replace suction...

Page 48: ...ckage Sensing bulb lost its operating charge Replace TXV Valve body damaged during soldering or by im proper installation Replace the TXV 10 8 Troubleshooting Tips COOLING MODE TROUBLESHOOTING TIPS SY...

Page 49: ...task WARNING Disconnect electrical power to the unit before removing the top panel or any electrical panel as the fan motor could start at any time and live electrical connections will be exposed Annu...

Page 50: ...S 2 TRANSFORMAER 24 VOLT 50 OR 60 HZ MIN 18 AWG TO THERMOSTAT REFER TO SYSTEM SCHEMATICS OR SCHEMATICS ON INDOOR SECTION FOR LOW VOLTAGE CONTROL WIRING UP SELECT AND DOWN PUSH BUTTONS USED FOR TEST AN...

Page 51: ...CLASS 2 TRANSFORMAER 24 VOLT 50 OR 60 HZ MIN 18 AWG TO THERMOSTAT REFER TO SYSTEM SCHEMATICS OR SCHEMATICS ON INDOOR SECTION FOR LOW VOLTAGE CONTROL WIRING UP SELECT AND DOWN PUSH BUTTONS USED FOR TES...

Page 52: ...52...

Reviews:

No comments

Brands by name

Popular brands

Load more brands