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Carrier Bryant 38MURA Installation Service
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Carrier Bryant 38MURA Installation Service

Carrier Bryant 38MURA Installation Service

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38MURA/40MUAA Crossover
Installation & Service
Instructor: Wes Almond
wes.almond@Carrierenterprise.com

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Summary of Contents for Carrier Bryant 38MURA

  • Page 1 38MURA/40MUAA Crossover Installation & Service Instructor: Wes Almond wes.almond@Carrierenterprise.com...
  • Page 2 “CE PRO+ ” We call it Wingman...
  • Page 3 TECH SUPPORT 866-542-4822 option# 3 CE App(Wingman) cesesupport.com se.techsupp@carrierenterprise.com...
  • Page 4 Site Demo CESESUPPORT.COM...
  • Page 5 Comes with a RG10F2 for high level programming of system. Brief Product Overview Can be used in conjunction with optional Wired Controller 1001 to operate system. Standard Indoor Unit Features 38MURA & 40MUAA 18, 24, 30, 36, 48, 60K sizes •...

  • Page 6: Installation

    INSTALLATION Indoor Unit Placement – Air Handler 40MBAB/40MUAA • Installation and Maintenance Clearances are very important for proper operation and future service. • If installed in unconditioned spaces where temperatures can exceed 85ºF & 80% RH, we recommend adding additional insulation around cabinet.
  • Page 7 Horizontal Right and Downflow orientations will require relocating and securing the T1 sensor into the Downflow return air stream Horizontal Right...

  • Page 8: Fan Setup

    FAN SETUP...
  • Page 9 WIRING Electrical 40MUAA Wiring • The 40MUAA (indoor unit) does not get power from the 38MURA (outdoor unit). • Each unit power supply home runs to the main electrical panel. • Electric Heat Kist require their own power supply if installed. •...
  • Page 10 WIRING Electrical 38MURA Wiring • The 38MURA (outdoor unit) requires a dedicated power supply. • Control wiring is covered later in this training. Electrical Connections Sizes: Electrical Connections Sizes: 18 to 36AA 36AB to 60 Power Wiring on Outdoor Unit 1PH – 208/230VAC Check Rating Plate or IM for Breaker Size...
  • Page 11 PIPING & CHARGING...
  • Page 13 PIPING & CHARGING Piping – Flares (cont.) Flare to Braze Connectors: • The MUAA/MURA units each include a package of 2 or 3 connectors. Product line Capacity Flare to Brazing Adapter Product line Capacity Flare to Brazing Adapter 5/8” flare to 3/4” flare 3/4"...
  • Page 14 PIPING & CHARGING Tool Considerations Biflow driers are not shipped with the equipment and must be installed Do these numbers matter?
  • Page 15 PIPING & CHARGING Piping – Flares • Little bit of lubrication front and back of flare • Refrigeration oil is best, lightly dampen rag with oil and wipe flare. • No dunking, no oil dripping from pipe. Do these numbers matter? •...
  • Page 16 This is how much pressure regulator is in the bottle Carrier Enterprise requires a 500 psi dry nitrogen pressure test on all system refrigerant piping for new start ups. Refrigerant repairs can be pressure tested to 600 psi.
  • Page 17 PIPING & CHARGING Installing a system without a nitrogen purge while brazing Sample Strainer can be detrimental to system performance due to the oxidation / scaling of the copper Each outdoor unit will have at least two strainers(filter). plugging the strainers This is to protect the metering device which is an electronic (Filter(s)).
  • Page 18 40MUAA Control Overview (not same as MBAB) 1001 The 40MUAA can use a 24-Volt thermostat or a 1001 • Connections Wired Controller. (all controls purchased separately). The built-in 24-Volt interface can provide further flexibility, • functionality and control by a 3 party 24-Volt thermostat.

  • Page 19: Optional Controls

    CONTROLS Optional Controls 7 Day Programmable Wired Wall Remote Controller • KSACN1001AAA – Fits: Ducted 40MBAB & 40MUAA Included with all 40MBAB ducted units • Indoor Setting Temperature Range: 62°F~86°F • Defaulted to Follow Me (Senses Temp at Controller, not indoor unit) •...
  • Page 20 Controls Controls – Manual Operation (cont.) Manual Button Locations 40MBD Ducted 40MBAB & 40MUAA Manual Button No matter what control is added to the indoor unit, DO NOT REMOVE THE RECEIVER. Attention: This button is only active if Attention: using the 1001 controller. Even though the 40MBAA has the same receiver in it’s control box, Manual Operation will not function due to the built-in 24-Volt Interface...
  • Page 21 4.7” Controls 4.7” Controls – KSACN01001AAA Install Instructions: 1. Disconnect power from system. 0.8” Deep 2. The remote control should be located at approximately 54” from the ground. 3. If the remote control will be the room’s primary temperature sensing location, pay special attention to its location and its surroundings within the room including direct sunlight from windows.
  • Page 22 Controls Indoor Unit – MBAB / MUAA Controls – KSACN01001AAA (cont.) Install Instructions (cont.): HA, HB Connections 8. Connect the 1001 controller’s HA & HB terminals to the Indoor Unit’s HA, HB terminals. 9. Connections are not polarity sensitive. 10. Shielded wire is not necessary. HA, HB Connections Back cover removed of 1001...
  • Page 23 Controls Indoor Unit – MBAB / MUAA Controls – KSACN01001AAA (cont.) HA, HB Connections Install Instructions (cont.): Optional Configurations • Main and Secondary Installation Method • System would run off from last command sent from either controller. • Set one of the control’s rotary switch to 1, keep HA, HB Connections the other at 0.
  • Page 24 Indoor Unit #1 Controls Net Address S1 = 0 S2 = OFF, OFF Controls – KSACN01001AAA (cont.) Install Instructions (cont.): Optional Configurations Indoor Unit #2 Wired Control Net Address • Up to 16 Indoor Units can be daisy S1 = 1 chained off from one controller Or S2 = OFF, OFF main &...
  • Page 25 Controls Indoor Unit #1 Net Address S1 = 0 S2 = OFF, OFF Controls – KSACN01001AAA (end) Install Instructions (end): Optional Configurations Indoor Unit #2 Net Address • Combine up to 16 indoor units and S1 = 1 main & secondary wired controls. S2 = OFF, OFF •...
  • Page 26 Controls Scenario 1 & 3 Scenario 2 38MURA/40MUAA Control Scenario Overview Control Type & Wiring Selection – SW1 DIP Switches Each Scenario has it’s own wiring type and gauge requirement. Control Scenario 1: (Default) 24-Volt Thermostat (new install) Control Wire ODU to IDU: 16 gauge Stranded (Shielded) 2-wire Control Wire IDU to stat: Minimum 5-wire, recommend 8-wire, 18 gauge solid or stranded.
  • Page 27 Controls...
  • Page 28 Controls...
  • Page 29 Controls...
  • Page 30 DUCTLESS AND CROSSOVER SOLUTIONS CROSSOVER SYSTEMS BEST PRACTICES: CONFIGURATION CHARACTERISTICS 38MURA • S1/S2 connection allows full communication. • 24-volt connection has no means of communication. • 38MURA paired with 40MUAA, connection S1/S2 recommended. • 24-volt connections reserved for cross-over solution. •...
  • Page 31 Controls 40MUAA Control Scenario 1 depends on features needed Control Selection – SW1 DIP Switches Control Scenario 1: 24-Volt Thermostat (new install) Control Wire ODU to IDU: 16 gauge Stranded (Shielded) 2-wire Control Wire IDU to stat: Minimum 5-wire, recommend 8-wire, 18 gauge solid or stranded. No change to SW1 DIP switches required Outdoor Unit MURA...
  • Page 33 Indoor Unit Terminal Info Controls 40MUAA Control Scenario 1 (cont.) Control Scenario 1 24-Volt Staging Options Control Scenario 1: 24-Volt Thermostat (new install) Control Wire ODU to IDU: 16 gauge Stranded (Shielded) 2-wire Control Wire IDU to stat: Minimum 5-wire, recommend 8-wire, 18 gauge solid or stranded. No change to SW1 DIP switches required Preferred connection without an Electric Heat Kit 5-wire...
  • Page 34 Indoor Unit Terminal Info Controls 40MUAA Control Scenario 1 (cont.) Control Scenario 1 24-Volt Staging Options (cont.) Control Scenario 1: 24-Volt Thermostat (new install) Control Wire ODU to IDU: 16 gauge Stranded (Shielded) 2-wire Control Wire IDU to stat: Minimum 5-wire, recommend 8-wire, 18 gauge solid or stranded. No change to SW1 DIP switches required 7-wire 6-wire...
  • Page 36 40MUAA DIPSWITCH INFORMATION-SW 3-3- AVAILABLE ONLY FOR SCENARIO 1 AND 2 Scenario 1(third party thermostat/RS 485 communication between indoor and outdoor units): OFF=increases compressor speed with W2 AUX Heat ON=delays compressor speed with W2 AUX Heat Scenario 2(1001 wired controller): OFF=6F t1-ts gap for 2 stage AUX Heat ON= 4F t1-ts gap for 2 stage...
  • Page 43 Controls 40MUAA Control Scenario 2 KSACN01001AAA Control Selection – SW1 DIP Switches (purchased separately) Control Scenario 2: Wired Control 1001 (new install) Control Wire ODU to IDU: 16 gauge Stranded (Shielded) 2-wire Control Wire IDU to Control: 16 gauge Stranded 2-wire Set SW1-1, SW1-2, SW1-4 set to OFF SW1-3 leave OFF for Heating &...
  • Page 44 Controls 40MUAA Set Up Options (cont.) S3 Rotary Switch – Ambient temperature controlled by electric heating or compressor. (only used with 1001, works with SW2-4) • 0 (default) means no temperature protection is turned ON • Rotary Dial position 1 through F = -4°F (-20°C) through 46°F (8°C).
  • Page 48 Controls 40MUAA Control Scenario 3 depends on features needed Control Selection – SW1 DIP Switches Control Scenario 3: 24-Volt Stat (typically for retrofit application) Control Wire ODU to IDU: Minimum 5-wire, recommend 8-wire, 18 gauge solid or stranded. Control Wire IDU to stat: Minimum 5-wire, recommend 8-wire, 18 gauge solid or stranded. Set DIP SW1-1 &...
  • Page 52 Controls Indoor Unit Terminal Info 40MUAA Control Scenario 3 (cont.) Control Scenario 3 24-Volt Staging Options Control Scenario 3: 24-Volt Stat (typically for retrofit application) Control Wire ODU to IDU: Minimum 5-wire, recommend 8-wire, 18 gauge solid or stranded. Control Wire IDU to stat: Minimum 5-wire, recommend 8-wire, 18 gauge solid or stranded. Set DIP SW1-1 &...
  • Page 53 Indoor Unit Terminal Info Controls 40MUAA Control Scenario 3 (cont.) Control Scenario 3 24-Volt Staging Options (cont.) Control Scenario 3: 24-Volt Stat (typically for retrofit application) Control Wire ODU to IDU: Minimum 5-wire, recommend 8-wire, 18 gauge solid or stranded. Control Wire IDU to stat: Minimum 5-wire, recommend 8-wire, 18 gauge solid or stranded.
  • Page 54 Indoor Unit Terminal Info Controls 40MUAA Control Scenario 3 (cont.) Control Scenario 3 24-Volt Staging Options (cont.) Control Scenario 3: 24-Volt Stat (typically for retrofit application) Control Wire ODU to IDU: Minimum 5-wire, recommend 8-wire, 18 gauge solid or stranded. Control Wire IDU to stat: Minimum 5-wire, recommend 8-wire, 18 gauge solid or stranded.
  • Page 55 Indoor Unit Terminal Info Controls 40MUAA Control Scenario 3 (cont.) Control Scenario 3 24-Volt Staging Options (cont.) Control Scenario 3: 24-Volt Stat (typically for retrofit application) Control Wire ODU to IDU: Minimum 5-wire, recommend 8-wire, 18 gauge solid or stranded. Control Wire IDU to stat: Minimum 5-wire, recommend 8-wire, 18 gauge solid or stranded.
  • Page 56 Indoor Unit Terminal Info Controls 40MUAA Control Scenario 3 (cont.) Control Scenario 3 24-Volt Staging Options (cont.) Control Scenario 3: 24-Volt Stat (typically for retrofit application) Control Wire ODU to IDU: Minimum 5-wire, recommend 8-wire, 18 gauge solid or stranded. Control Wire IDU to stat: Minimum 5-wire, recommend 8-wire, 18 gauge solid or stranded.
  • Page 57 Indoor Unit Terminal Info Controls 40MUAA Control Scenario 3 (end) Control Scenario 3 24-Volt Staging Options (end) Control Scenario 3: 24-Volt Stat (typically for retrofit application) Control Wire ODU to IDU: Minimum 5-wire, recommend 8-wire, 18 gauge solid or stranded. Control Wire IDU to stat: Minimum 5-wire, recommend 8-wire, 18 gauge solid or stranded.

  • Page 69: Dip Switches

    DIPSWITCHES 40MUAA Set Up Options (end) Full DIP/Rotary Switch Explanations 1001 Only *NOTE: Auto detection is available after serial number 0223V26809. With this feature active, the system detects the wiring method according to the 3 control scenarios automatically with all SW1 dip switches set to default. NOTE: After the serial number (0223V26809) the auto detection feature is available;...
  • Page 70 DIPSWITCHES If one control per indoor unit, no change needed. 40MUAA Set Up Options (cont.) S1 & S2 – Net Address Setting If one control per indoor unit (IDU), no change needed • If two or more IDU per control, each S1 must have different value •...
  • Page 71 DIPSWITCHES 40MUAA Set Up Options (cont.) Runtime, Temp Differential Settings – SW3 DIP Switches SW3-1: Continuous runtime Default is 90 min (OFF), 30 min (ON) SW3-2: Cooling and heating Y2 temperature differential adjustment Default is 4°F (OFF), 2°F (ON) SW3-3: Temperature differential to activate second stage auxiliary heating Default is 6°F (OFF), 4°F (ON) SW3-4: No function at this time.
  • Page 72 DIPSWITCHES 40MUAA Set Up Options (cont.) Air flow Settings – SW4 DIP Switches We recommend to set these based on air flow requirements of the system SW4-1 & 3 OFF SW4-1 OFF SW4-1 & 2 OFF ALL DIP’s OFF (default) SW4-2 ON SW4-2 &...
  • Page 73 DIPSWITCHES...
  • Page 74 DIPSWITCHES...
  • Page 75 DIPSWITCHES...
  • Page 76 DIPSWITCHES Section of Display PCB Air Handler: 40MUAA Remote ON/OFF (CN23) (must remove JR1 Jumper) N.C. contacts – When contacts open a “CP” Code will appear and system will shut down. Codes will only appear on the 1001 Wired Controller and/or the display PCB only.
  • Page 77 DIPSWITCHES Air Handler: 40MUAA Water (CN5) (must remove J1 Jumper) N.C. contacts – When contacts open an “EE” Code will appear and system will shut down. J1 Jumper Alarm Output (CN33) N.O. contacts – Contacts closes on Error. Contacts rated: 250VAC, 10 Amps max. Work (CN23) N.O.
  • Page 78 Start Up Scenario 1 & 3 MBAB/MUAA Operational Codes – Shut Down – The below codes will appear based on the operational mode the system is calling for. – Cooling – Cooling 2 – Dehumidification 1 – Dehumidification 2 – Heating 1 (H/P) –...
  • Page 79 Start Up Scenario 1 & 3 Check the TD in “COOL”. If the TD is between 20-30 degrees, your charge is correct (TD= Temp in – Temp out) Temperature Differential 40MUA board should be displaying a Y2 call (03 or 07) for cooling or heating and run for 20 minutes before taking temps Check the TD in “HEAT”...
  • Page 80 Start Up Scenario 2 Check the TD in “COOL”. If the TD is between 20-30 degrees, your Set indoor temp so set temp is at least charge is correct 4’F lower than inside (TD= Temp in – Temp out) Temperature Differential temperature Each mode will require 20 minutes of run time...

  • Page 81: Troubleshooting

    TROUBLESHOOTING...
  • Page 82 T ROUBLESHOOTI NG...

  • Page 83: Information Inquiry

    40MUAA INQUIRY MODE Information Inquiry To enter inquiry mode, with power-on or standby mode, in unlocked state, using handheld remote. Press the key combination On/Off + Fan for 7 seconds:...
  • Page 84 40MUAA INQUIRY MODE Information Inquiry • A u t o , C o o l , D r y, H e a t a n d t h e b a t t e r y i c o n •...
  • Page 85 40MUAA INQUIRY MODE • Scroll with the UP and Down arrows to view the values.
  • Page 86 GAS COOLED LOOP FUNCTION • Replaces the air-cooled board on certain size ODU’s • Uses refrigerant through a loop to maintain a safe IPM temperature • On all ODU’s that are MURA-the loop temperature changes as the outdoor/indoor conditions change...
  • Page 87 GAS COOLED LOOP FUNCTION • MURA Units there is a cold plate 10k thermistor that monitors the loop temperature in heating mode • As the loop temperature changes the thermistor sends the information to the outdoor interface to change the EEV position •...
  • Page 88 MURA GAS LOOP SENSOR LOCATION ( L M G )
  • Page 89 GAS COOLED LOOP LOCATION • Remove all inverter mounting screws to reveal gas loop/cold plate/inverter plate location in ODU • Anytime the inverter is replaced the cold plate has to have conductive grease reapplied to it • Conductive grease part# 38AQ680001...
  • Page 90 TROUBLESHOOTING...
  • Page 91 TROUBLESHOOTING...
  • Page 92 TROUBLESHOOTING...
  • Page 93 TROUBLESHOOTING...
  • Page 94 TROUBLESHOOTING...
  • Page 95 TROUBLESHOOTING...
  • Page 96 TROUBLESHOOTING Always verify indoor and outdoor sensors are in proper placement and exv is securely attached...

  • Page 97: Diagnostic Steps

    TROUBLESHOOTING EL01 • Advanced Diagnostic – RS-485 Communication Protocol – Communication Error between IDU/ODU • E1 (EL 01): No Communication detected between IDU and ODU for 6 min – Diagnostic Steps: • 1) Disconnect the S1/S2 wires from the IDU or ODU Terminal block, then divide the system as IDU side and ODU side •...
  • Page 98 ERROR DIAGNOSIS EH03...

  • Page 99: Error Diagnosis

    Error Diagnosis PC00 & PC04 Multi head Outdoor unit Replace the IPM board IPM Continuity Check OR replace the main Check if the IPM terminal resistance PCB if the PCB are values are uniform integrated together. Actual Ohm readings may vary. If the Ohm readings between the terminals are not the same, the IPM has most likely failed.
  • Page 100 Error Diagnosis PC00 & PC04 Check if the Replace the compressor resistance values compressor are uniform Anything more then a 10% difference in the ohm readings and the compressor should be replaced. Variable Speed compressors can run grounded but not very well. Make sure to disconnect power before proceeding with this check and it has been OFF for 3 mins.
  • Page 101 TROUBLESHOOTING Always make sure you are looking in the correct manual for the error code that is being displayed...
  • Page 102 38MURA ERROR CODES...
  • Page 103 40MUAA ERROR CODES...
  • Page 104 KSACN1001AAA ERROR CODES...

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