International ProStar/LoneStar 12V DC No Idle HVAC Service Manual (16UZL) PDF

Description

International ProStar/LoneStar 12V DC No Idle HVAC Service Manual (16UZL) PDF DOWNLOAD

📘 12V DC No Idle HVAC System (16UZL) – Service Manual (S16043) PDF

This is a technician-focused service manual for the battery-powered sleeper HVAC system used on International ProStar® and LoneStar® trucks. It covers how the No Idle COOL, No Idle HEAT, and ENGINE PREHEAT functions operate, plus the correct service workflow for the shared standard A/C + no-idle A/C architecture.

⭐ What this system does (high value for buyers)

• Provides sleeper heating/cooling without idling the engine

• Includes engine preheat by circulating heated coolant through the engine

• Typical runtime: ~10 hours on fully charged deep-cycle batteries (system protection disables around ~11.7V to preserve starting power)

• Uses a fuel-operated coolant heater (ESPAR-type heater section included)

📑 Table of Contents

1) Safety Precautions

• General precautions (parking/brake/chock, battery safety, CO warnings, heater ventilation)

• Refrigerant precautions (R-134a handling, recovery, charging rules)

2) Description

• No Idle HVAC unit + operation overview

• Blower motor + Linear Power Module (LPM)

• Temperature sensors (inlet/discharge)

• System controller + compressor controller

• Blend door actuator + flow control valve

• HVAC control panel + engine preheat switch

• Filter

• Internal HVAC components (condenser, fan, compressor, receiver-drier, shared evaporator/heater coil)

• Under-cab components (plumbing, expansion valve, drain tube, coolant heater, shutoff valves)

3) Service Procedures for R-134a

• Refrigerant identification

• Manifold gauge set install/remove

• Refrigerant recovery (discharging)

• Evacuating system

• Full charge procedure

• Oil fill guidelines (including recovery oil handling)

4) Remove & Install Procedures

• No Idle HVAC unit (remove/install)

• Blower motor

• Condenser fan

• Discharge temp sensor / inlet temp sensor

• System controller / compressor controller

• Blend door actuator + blend door

• Heater coil

• No Idle heater

• Flow control valve

• HVAC filter + drain tube

• Linear Power Module (LPM)

• No Idle refrigerant circuit

5) Diagnosis & Troubleshooting

• Fault codes

• Component checks (controller, compressor controller, sensors, actuator, blower, LPM)

• “Not cooling / no A/C” flowcharts (airflow OK but warm, fan circuit, compressor, pressure switch)

• “Not heating / no heat” (coolant heater checks)

• Circuit diagrams (relay/fuse block layout + no-idle 12V DC circuit diagram)

6) Specifications

• Truck’s standard A/C specifications

• Torque references

🔧 Practical Notes (great for customers)

• The No Idle A/C refrigerant circuit is sealed and commonly replaced as an assembly, but servicing it may require discharging the truck’s standard A/C due to shared components.

• Clear troubleshooting sections for:

  • Warm air / no A/C cooling

  • No heat (coolant heater / flow control behavior)

  • Blower speed issues (LPM + blower circuit)

📌 File Details

Stop guessing and fix it right the first time—this manual gives you the fault codes, wiring diagrams, and step-by-step removal/diagnostics for the No Idle system. Buy now and download instantly so you can get the sleeper HVAC working again today.