EasyManua.ls Logo

Carrier 38QH36-H - User Manual

Carrier 38QH36-H
22 pages
Save Page as PDF
Print Icon
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Loading...
2005
SERVICE & MAINTENANCE MANUAL

Table of Contents

Questions and Answers

  • R
    robertanthonyAug 20, 2025
    Why is my Carrier Air Conditioner not supplying enough cooling?
    • A
      Amanda CordovaAug 20, 2025
      Your Carrier Air Conditioner might not be providing sufficient cooling due to several reasons. Check if airflow is obstructed and remove any obstacles. Ensure the air filters are clean, as dirty filters restrict air circulation. Also, make sure doors and windows are closed. Verify that the fan speed isn't set to low; if it is, increase it to high. Adjust the airflow direction according to the selected mode. Finally, ensure the selected temperature is not higher than the room temperature in cooling mode and correct it if necessary.
  • S
    Scott WhiteAug 22, 2025
    Why is my Carrier 38QH36-H not supplying enough heating?
    • K
      Kathy StewartAug 22, 2025
      If your Carrier Air Conditioner isn't heating adequately, several factors could be responsible. Ensure that the airflow isn't blocked by any obstructions. Clean the air filters, as dirty filters reduce air circulation. Confirm that all doors and windows are closed. Increase the fan speed if it's set to “Low”. Adjust the airflow direction according to the chosen mode. Finally, verify that the selected temperature is not lower than the room temperature when in heating mode, and correct it if needed.
  • W
    William PeckAug 25, 2025
    What to do if my Carrier 38QH36-H Air Conditioner remote control does not acknowledge signal with a beep when pressing any function button?
    • P
      Pamela BanksAug 25, 2025
      If your Carrier Air Conditioner doesn't respond to the remote, even when the remote display shows the function, try these steps: First, ensure the main switch of the unit is in the ON position. Then, replace the remote control batteries. Make sure you're pointing the remote directly at the indoor unit's receiver. Remove any obstacles like curtains or walls that might be blocking the signal. Also, avoid direct sunlight on the receiver. Finally, be aware that electromagnetic interference from nearby devices like computers or appliances can obstruct the signal.
  • J
    Jerry HamiltonAug 26, 2025
    What to do if my Carrier 38QH36-H Air Conditioner does not acknowledge signal with a beep when pressing start button?
    • E
      Eric HowardAug 27, 2025
      If your Carrier Air Conditioner isn't responding to the start button on the remote, consider these possibilities: Ensure the main switch is in the ON position. Replace the remote's batteries. Point the remote directly at the indoor unit's receiver, making sure there are no obstructions like curtains or walls. Also, avoid direct sunlight on the receiver. Electromagnetic interference from nearby appliances might also be a factor, so avoid sending signals when computers or household appliances are operating close by.
  • P
    pamela30Aug 28, 2025
    What to do if my Carrier Air Conditioner does not acknowledge signal with a beep when pressing stop button?
    • B
      bradley29Aug 28, 2025
      If your Carrier Air Conditioner isn't responding when you press the stop button on the remote, try these solutions: Replace the remote's batteries. Ensure you are pointing the remote directly at the indoor unit's receiver, without any obstacles like curtains or walls in the way. Avoid direct sunlight on the receiver. Also, be aware that electromagnetic interference from nearby devices could be interfering with the signal.
  • C
    ckochAug 29, 2025
    What to do if the display is not lit after placing batteries into the remote control of my Carrier 38QH36-H?
    • R
      Robert GarciaAug 29, 2025
      If the display on your Carrier Air Conditioner remote control isn't lit after inserting batteries, the batteries may be exhausted or have the wrong polarity. Replace the batteries or check their polarity.
  • M
    Matthew KleinAug 31, 2025
    What to do if hour figures on display do not flash when pressing the recessed lock adjustment button on my Carrier 38QH36-H remote control?
    • M
      Michael HawkinsSep 1, 2025
      If the hour figures on the display of your Carrier Air Conditioner remote control do not flash when pressing the recessed lock adjustment button, it may be because the recessed button has not been pressed correctly. Press it with a round point, avoiding strong pressure.
  • O
    oreedSep 2, 2025
    What to do if all symbols appear on display when pressing any button on my Carrier 38QH36-H remote control?
    • M
      Mrs. Deanna EstradaSep 2, 2025
      If all symbols appear on the display when pressing any button on your Carrier Air Conditioner remote control, it could be that the recessed button for time setting is blocked due to excessive pressure during use; check and repair it. Alternatively, the remote control may be irreversibly damaged and need replacement.
  • A
    Amy WilliamsSep 4, 2025
    What to do if my Carrier Air Conditioner will not start?
    • P
      Patricia BurchSep 4, 2025
      If your Carrier Air Conditioner won't start, first check if the main supply switch is turned ON. If it is, inspect the fuses or main switch and replace any blown fuses. Also, the unit may be in protection mode against frequent compressor cycling, so wait for 3 minutes. Lastly, check that the selected temperature isn't higher than the room temperature in cooling mode (or lower in heating mode) and adjust accordingly.
  • W
    William HarrisonSep 6, 2025
    Why does my Carrier 38QH36-H indoor unit have unpleasant smells?
    • A
      adamsmeganSep 6, 2025
      Unpleasant smells from your Carrier Air Conditioner's indoor unit can be caused by substances accumulated in the air filters. Switch the system OFF and contact an authorized service center to have the filters cleaned. Restart unit in the ventilation (fan only) mode and open windows to change room air.

Summary

1. PRECAUTIONS BEFORE INSTALLATION

SAFETY CONSIDERATIONS

Service and maintenance can be hazardous; only trained personnel should perform.

WARRANTY EXCLUSIONS

Details what is not covered in Carrier warranty, including misuse and improper maintenance.

5. SYSTEM OPERATING LIMITS

COOLING MODE TEMPERATURE LIMITS

HEATING MODE TEMPERATURE LIMITS

POWER SUPPLY VOLTAGE REQUIREMENTS

Nominal voltage, minimum, and maximum voltage for the unit.

6. SYSTEM SAFETY PROTECTIONS

HEAT PUMP SYSTEM PROTECTIONS

Lists protection types, effects, modes, and conditions for heat pump systems.

COOL ONLY SYSTEM PROTECTIONS

Lists protection types, effects, modes, and conditions for cool-only systems.

DEFROST CYCLE EXPLANATION

Explains defrost cycles in heat pump mode and indoor fan behavior.

11. WIRING DIAGRAMS

INDOOR UNIT HEAT PUMP WIRING

Wiring diagram for the indoor unit of the heat pump model.

INDOOR UNIT COOL ONLY WIRING

Wiring diagram for the indoor unit of the cool-only model.

WIRING DIAGRAMS (CONT.)

OUTDOOR UNIT HEAT PUMP WIRING

Wiring diagram for the outdoor unit of the heat pump model.

OUTDOOR UNIT COOL ONLY WIRING

12. FIELD ELECTRICAL CONNECTIONS

HEAT PUMP SYSTEM CONNECTIONS

COOL ONLY SYSTEM CONNECTIONS

14. SELF DIAGNOSTIC FUNCTION

INTRODUCTION TO SELF-DIAGNOSTICS

SELF-DIAGNOSTIC FUNCTION DETAILS

16. PERIODICAL CHECKS

INDOOR UNIT MAINTENANCE SCHEDULE

OUTDOOR UNIT MAINTENANCE SCHEDULE

17. TROUBLE SHOOTING

UNIT WILL NOT START

Reasons and actions for when the compressor and outdoor fan fail to start.

COMPRESSOR START-UP ISSUES

Troubleshooting for compressor not starting, cycling, or operating continuously.

HEAD PRESSURE AND OVERLOAD ISSUES

Reasons and actions for excessive head pressure and compressor overload cycles.

TROUBLE SHOOTING (CONT.)

PRESSURE RELATED TROUBLESHOOTING

Troubleshooting for low head pressure, excessive/low suction pressure.

TROUBLE CHART (CONT.)

COOLING AND HEATING PERFORMANCE ISSUES

Reasons and actions for insufficient cooling or heating.

LED INDICATOR FAULT CODES

Reasons and actions for blinking Timer or Power LEDs.

Carrier 38QH36-H Specifications

General IconGeneral
Heating Seasonal Performance Factor (HSPF)9.0
Phase1
Cooling Capacity36000 BTU/h
Heating Capacity36000 BTU/h
Seasonal Energy Efficiency Ratio (SEER)16.0
RefrigerantR410A
Voltage208/230V
Sound Pressure Level (Indoor)42 dB

Related product manuals