Paccar SmartAir eHVAC System Service Manual
  1. Manuals
  2. Brands
  3. Paccar Manuals
  4. Controller
  5. SmartAir eHVAC System
  6. Service manual

Paccar SmartAir eHVAC System Service Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

S
ERVICE
M
ANUAL
Confidentiality Notice: This document and the information contained herein is proprietary. It shall not be reproduced, copied or disclosed,
in whole or in part, or used for manufacture without the written permission of PACCAR. You are hereby notified that any dissemination of
this information is strictly prohibited.
SmartAir eHVAC System
Technical Information and Diagnostic Guide
This guide will assist you in becoming more familiar with the working components
of the Peterbilt SmartAir eHVAC System and the proper steps and procedures to
completely diagnose the Peterbilt SmartAir eHVAC System unit.
©2019 PACCAR Corporation
HVAC
Section
Title
SmartAir eHVAC System Service Manual
PM820010
Number
Date
Rev. 10 © 6/2019
Model
All w/ SmartAir eHVAC System
Page
1 of 40

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the SmartAir eHVAC System and is the answer not in the manual?

Questions and answers

Birkley Bennett
April 28, 2025

What connection do they use to charge the unit back up to refrigerant

0
1 comments:
Mr. Anderson
May 15, 2025

The Paccar eHVAC System is charged with refrigerant using a recovery/recycling/charging station that must remain connected to the A/C system throughout the charging process.

This answer is automatically generated

0

Subscribe to Our Youtube Channel

Summary of Contents for Paccar SmartAir eHVAC System

  • Page 1 Confidentiality Notice: This document and the information contained herein is proprietary. It shall not be reproduced, copied or disclosed, in whole or in part, or used for manufacture without the written permission of PACCAR. You are hereby notified that any dissemination of...

  • Page 2: Table Of Contents

    HVAC: SmartAir eHVAC System Page 2 of 40 Number PM820010 Contents GENERAL SAFEY INSTRUCTIONS ........5 Warnings, Cautions, and Notes .
  • Page 3 HVAC: SmartAir eHVAC System Page 3 of 40 Number PM820010 H. Main Controller/Compressor Controller ......19 Condenser Fan Motor Testing .
  • Page 4 HVAC: SmartAir eHVAC System Page 4 of 40 Number PM820010 List of Figures Figure 1. Fuses and Relays ..............8 Figure 2.

  • Page 5: General Safey Instructions

    HVAC: SmartAir eHVAC System Page 5 of 40 Number PM820010 GENERAL SAFEY INSTRUCTIONS CAUTION A number of alerting messages are in this manual. Please read and follow them. They are there for your pro- • The air conditioning system uses HFC134a tection and information.

  • Page 6: Important Safety Notices

    HVAC: SmartAir eHVAC System Page 6 of 40 Number PM820010 • Do not wear loose-fitting or torn clothing. Remove all jewelry before working. NOTE • Before beginning any repair, disconnect the battery (negative [-] cable) from both battery boxes and dis- Take care to follow the handling procedures below: charge any capacitors.
  • Page 7 HVAC: SmartAir eHVAC System Page 7 of 40 Number PM820010 • Do not perform any repair when impaired, tired, • Close the manual fuel valves prior to performing fatigued or after consuming alcohol or drugs that can maintenance and repairs, and when storing the vehi- impair your functioning.

  • Page 8: External Component Identification And Location

    HVAC: SmartAir eHVAC System Page 8 of 40 Number PM820010 EXTERNAL COMPONENT IDENTIFICATION AND LOCATION A. Fuses Figure 2. Fuses and Relays (Units built 8/1/2016 to Present) F1 Fuse 10 Amp (Mini) This fuse provides short circuit protection for the System control.

  • Page 9: Relays

    HVAC: SmartAir eHVAC System Page 9 of 40 Number PM820010 Location: on the control center. F3 Fuse 20 Amp (Mini) This fuse provides short circuit protection for the evapo- rator blower. Location: on the control center. F4 Fuse 60 Amp (Maxi) This fuse provides short circuit protection for the com- pressor.

  • Page 10: Linear Power Module

    HVAC: SmartAir eHVAC System Page 10 of 40 Number PM820010 E. Linear Power Module This module controls the amount of voltage delivered to the evaporator blower creating variable blower speeds. It is located in the return air in front of the evaporator coil.

  • Page 11: Figure 9. Battery Separator Solenoid, Located In The Battery Box

    HVAC: SmartAir eHVAC System Page 11 of 40 Number PM820010 Figure 9. Battery Separator Solenoid, located in the battery box.

  • Page 12: Internal Components

    HVAC: SmartAir eHVAC System Page 12 of 40 Number PM820010 INTERNAL COMPONENTS A. High Pressure Switch This normally closed brazed pressure switch will open and prevent the operation of the compressor due to high internal pressure. It is NOT serviceable.

  • Page 13: A/C System Diagnostic

    HVAC: SmartAir eHVAC System Page 13 of 40 Number PM820010 A/C System Diagnostic Check service screens before troubleshooting, see NOTE “Operation” on page 37. Removing fuse F1 for 10-15 seconds will reset the sys- tem controller to factory default settings.
  • Page 14 HVAC: SmartAir eHVAC System Page 14 of 40 Number PM820010 Table 1. A/C System Diagnostic PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION “Appendix” on page 18. Unit runs—but does not 1. Airflow blockage. 1. Clear any blockage from recirculation grill or louvers.
  • Page 15 HVAC: SmartAir eHVAC System Page 15 of 40 Number PM820010 Table 1. A/C System Diagnostic PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION “Appendix” on page 18. Unit runs correctly, but 1. Ground terminal(s). 1. Inspect and tighten ALL connections. less than expected run 2.

  • Page 16: Espar Heating System Diagnostic Table

    HVAC: SmartAir eHVAC System Page 16 of 40 Number PM820010 ESPAR Heating System Diagnostic Monthly running and periodic maintenance are required for proper heater operation and performance. Table Check service screens before troubleshooting, see “Operation” on page 37. Table 2.
  • Page 17 HVAC: SmartAir eHVAC System Page 17 of 40 Number PM820010 Table 2. ESPAR Heating System Diagnostic Table PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION / “Appendix” on page 18. 1. Fuel. Heater blows cold air but no See Espar Manual. heat. 2. Fuel pump.

  • Page 18: Appendix

    HVAC: SmartAir eHVAC System Page 18 of 40 Number PM820010 Appendix Now, with relay unplugged, check across terminals 85 and 86 of the relay, using an OHM meter. You should have approximately 90 ohms + or - 10% at 68°F (20°C).

  • Page 19: Check Continuity Across Fuse Body

    HVAC: SmartAir eHVAC System Page 19 of 40 Number PM820010 H. Main Controller/Compressor Controller connection, high pressure situation or defective switch. If the pressure, harness and connections are okay, the EHVAC unit will have to be replaced. See updated information on “Service Instructions for Ring...

  • Page 20: Condenser Fan Motor Testing

    HVAC: SmartAir eHVAC System Page 20 of 40 Number PM820010 e. If all signals are correct and the safety controls Using a DC ammeter you can check the amperage draw thermal limit on compressor, high pressure of the blower. Normal amps approximately 5–10 depend- switch and temp sensor /freeze switch are okay, ing on speed requests.

  • Page 21: Testing The Battery Management System (Bms)

    HVAC: SmartAir eHVAC System Page 21 of 40 Number PM820010 L. Testing the Battery Management System With aux voltage okay, LED flashing and 12 volts across pins 8 and 1, start the truck or connect the start batteries (BMS) to a battery charger and bring the voltage above 13.2 for at least 15 seconds.

  • Page 22: Can Bus

    (positive) and brown/white (negative) wires. You should have 12 volts. If the digital controller shows the tempera- The SmartAir eHVAC System has the CAN BUS 120 ture set point and heat mode and you do not have 12 ohm resistors built internally in the digital control panel volts, check the EHVAC internal system controller output and Battery Management System (BMS).

  • Page 23: Connecting The System

    Tightly reseal the system after each SmartAir eHVAC System unit, you have a bad connec- charge or service. tion or a defective harness. If you do not have the correct resistance here, your digital controller is defective.

  • Page 24: Evacuating The System

    HVAC: SmartAir eHVAC System Page 24 of 40 Number PM820010 On the recovery station and hose fittings, verify that 3. Connect the recovery stations blue hose to the ser- all valves are closed. The valves at the recovery sta- vice port located on the Peterbilt EHVAC system.

  • Page 25: Charging The Ehvac System

    HVAC: SmartAir eHVAC System Page 25 of 40 Number PM820010 c. Continue to operate the recovery station vacuum pump until the system has pulled a vacuum of NOTE 750 – 1000 microns as measured by the elec- tronic vacuum gauge (15 minutes minimum).
  • Page 26 HVAC: SmartAir eHVAC System Page 26 of 40 Number PM820010 1. Determine the model of truck to charge the A/C sys- 2. On the recovery station, set the high side valve to tem. CLOSED, and the low side valve to CHARGE.
  • Page 27 HVAC: SmartAir eHVAC System Page 27 of 40 Number PM820010 Table 4. Discharge Sensor / Freeze Switch Testing Chart...
  • Page 28 Page 28 of 40 Number PM820010 HVAC: SmartAir eHVAC System 12 VOLTS (RED) GND (BLACK) CANL (GREEN) CANH (YELLOW)
  • Page 29 Page 29 of 40 Number PM820010 HVAC: SmartAir eHVAC System ACCESSORY INPUT TO UNIT HEATER_EN (BLACK) IGNITION INPUT TO UNIT GROUND (WHITE) VEHICLE WEBASTO HEATER_LVL (BLUE) FUEL OPERATED HEATER DEUTSCH DT06-4S FUSE AMP 929504-2 WEBASTO OPTION HEATER_OPTION (RED) HEATER_EN (YELLOW)

  • Page 30: Figure 19. Wiring Diagram (8/1/2016 To Present)

    Page 30 of 40 Number PM820010 HVAC: SmartAir eHVAC System BLOWER MOTOR OUTPUT + MOTOR OUTPUT - BLOWER SYSTEM COMPRESSOR OVERTEMP CUT OUT CONTROLLER COMPRESSOR LPM1 MOTOR OUTPUT + PRESS IN W23-RED-14 MOTOR OUTPUT - HIGH W24-BLACK-14 PRESSURE SWITCH LINEAR...
  • Page 31 HVAC: SmartAir eHVAC System Page 31 of 40 Number PM820010 Table 5. Control Module Pinout with Functional Information Circuit ID Wire Color Function Typical Voltage Other End of Circuit CONTROL_F Red/White 12V power from F1 - 12-14V Control fuse F1 and control pin 1...
  • Page 32 HVAC: SmartAir eHVAC System Page 32 of 40 Number PM820010 Table 5. Control Module Pinout with Functional Information Circuit ID Wire Color Function Typical Voltage Other End of Circuit WAKEUP Blue Switch to Ground input 9-14V with control off, Blue wire (pin 6) in connector from ACU - turns on <1V when unit on...

  • Page 33: Service Instructions For Ring Terminal / Controller And Compressor

    HVAC: SmartAir eHVAC System Page 33 of 40 Number PM820010 Service Instructions for Ring Terminal / Controller and Compressor WARNING: To avoid potential property damage or personal injury, Read Important Safety Warnings and ALL instructions before attempting to install or service product.
  • Page 34 HVAC: SmartAir eHVAC System Page 34 of 40 Number PM820010 WARNING: To avoid potential property damage or personal injury, Read Important Safety Warnings and ALL instructions before attempting to install or service product. CAUTION: Care must always be taken to install the control cover without bending the connector pins identified in FIGURE 1.
  • Page 35 HVAC: SmartAir eHVAC System Page 35 of 40 Number PM820010 WARNING: To avoid potential property damage or personal injury, Read Important Safety Warnings and ALL instructions before attempting to install or service product.
  • Page 36 HVAC: SmartAir eHVAC System Page 36 of 40 Number PM820010 WARNING: To avoid potential property damage or personal injury, Read Important Safety Warnings and ALL instructions before attempting to install or service product.

  • Page 37: Operation

    HVAC: SmartAir eHVAC System Page 37 of 40 Number PM820010 Operation To start the system push ON/OFF button. Display will show current mode/ temperature setting / battery level. See Figure 20. Initial default setting is blower speed 1/ AUTO- MODE /60 °F.

  • Page 38: Figure 25

    HVAC: SmartAir eHVAC System Page 38 of 40 Number PM820010 ENTER ENTER Figure 24. View System Runtime/Hours Figure 25. Change from °F to °C To change from °F to °C press ENTER until temperature To enter SERVICE MODE: Push both the ON/OFF and symbol only shows –...

  • Page 39: Figure 26. Enter Service Mode

    HVAC: SmartAir eHVAC System Page 39 of 40 Number PM820010 Table 6. Fault Code List Code Failure Description Solution HMI Temperature Sensor BLUETOOTH Controller only / System Error defaults to 72F 1. Evaporator sensor open or shorted high 2. Evaporator sensor shorted low 3.

  • Page 40: Figure 27. Service Screens

    HVAC: SmartAir eHVAC System Page 40 of 40 Number PM820010 Press the ENTER button to proceed through the avail- When necessary, Check Filter light will notify you that the able service screens. See Figure 27. EHVAC filter must be cleaned or changed. To reset filter: at screen 1 press and hold enter button for 3 seconds.

This manual is also suitable for:

Smartair ehvac

Table of Contents

Save PDF