Bosch LV018 - User Manual

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Installation and Maintenance Manual

LV MODEL

8733944336 (2016/09)

Table of Contents

Questions and Answers

K
Karla PerezSep 7, 2025
How to troubleshoot a Bosch LV018 Heat Pump with no compressor operation but running fan, possibly due to blocked return air?
- A
  Alyssa BryanSep 7, 2025
  If your Bosch Heat Pump's compressor isn't running but the fan is, it could be due to a condensate fault caused by blocked return air. Check the condensate pan for a high water level. Also, check the air filter and return air duct work for blockage, and ensure there is adequate space between the return air opening and any obstructions.
G
gthomasAug 22, 2025
Why is my Bosch LV018 Heat Pump not shifting into cooling?
- S
  stevenortegaAug 22, 2025
  If your Bosch Heat Pump isn't shifting into cooling mode, check that the reversing valve solenoid is receiving 24 VAC. If it is, check the resistance of the solenoid; an open circuit may indicate a burned out solenoid. Also, check that the reversing valve thermostat wire is connected to the 'O' terminal of the thermostat and check for a contact closure between 'O' and 'R'. Finally, check that the wires from the thermostat to the unit are securely connected and that the wires from the electrical box to the reversing valve are connected.
E
Emily HumphreySep 5, 2025
What to do if the compressor of my Bosch LV018 doesn't work but the fan runs and there is a freeze fault caused by low refrigerant?
- A
  Allen FernandezSep 5, 2025
  If your Bosch Heat Pump's compressor isn't running but the fan is, it could be due to a freeze fault in the air coil caused by low refrigerant. Check the refrigerant pressure with a gauge set.
E
emma55Sep 3, 2025
How to troubleshoot a Bosch LV018 with no compressor operation but running fan, possibly due to a bad thermostat connection?
- D
  Donald RodriguezSep 3, 2025
  If the compressor of your Bosch Heat Pump is not working, but the fan is running, it might be due to a brown-out fault caused by a bad thermostat connection. Check that the thermostat wiring is of the proper gauge and length, is undamaged, and that all connections at the thermostat and heat pump are secure.
E
eduardo50Sep 2, 2025
What to do if my Bosch LV018 Heat Pump compressor isn't running but the fan is on and I suspect an overloaded control circuit?
- C
  carla21Sep 2, 2025
  If the compressor of your Bosch Heat Pump is not working, but the fan is running, it might be due to a brown-out fault caused by an overloaded control circuit. Check the control voltage; if it's below 18V, inspect the accessories connected to the unit and ensure they don't exceed the VA draw.
B
baileyjaneAug 31, 2025
Why is my Bosch Heat Pump compressor not running but the fan is, possibly due to low airflow?
- R
  Rebecca CollinsAug 31, 2025
  If your Bosch Heat Pump's compressor isn't running but the fan is, it could be due to a low-pressure fault caused by no or low airflow. Check the fan motor to ensure it is operating correctly.
A
andre60Aug 30, 2025
What to do if my Bosch Heat Pump compressor isn't running but the fan is, and I suspect airflow issues?
- M
  Mr. Shawn Salinas IIIAug 30, 2025
  If your Bosch Heat Pump's compressor isn't running but the fan is, it could be due to a high-pressure fault caused by no or low airflow. Check the fan motor to ensure it is operating correctly.
S
Seth IbarraAug 29, 2025
How to troubleshoot a Bosch Heat Pump with no compressor operation but running fan, possibly due to a fouled water coil?
- K
  Katrina EwingAug 29, 2025
  If your Bosch Heat Pump's compressor isn't running but the fan is, it could be due to a high-pressure fault caused by a fouled or scaled water coil. Check for proper flow rate and water temperature, especially looking for a low water side temperature rise during cooling.
K
Kathryn FosterAug 27, 2025
Why is my Bosch Heat Pump compressor not running but the fan is, possibly due to high water temperature?
- C
  Carla MclaughlinAug 28, 2025
  If your Bosch Heat Pump's compressor isn't running but the fan is, it could be due to a high-pressure fault caused by high water temperature. Check the water temperature to ensure it is within the appropriate range.
T
twallAug 27, 2025
What to do if the compressor of my Bosch LV018 doesn't work but the fan runs and there is a freeze fault?
- S
  Susan SmithAug 27, 2025
  If your Bosch Heat Pump's compressor isn't running but the fan is, it could be due to a freeze fault in the water coil caused by no or low water flow. Check the water valves and/or pumps to ensure they are operating correctly. Also, check the water coil for any blockages.

Summary

Key to Symbols and Safety Warnings

Symbol Definitions

Explains symbols used for warnings, cautions, and important information.

Critical Safety Precautions

Highlights essential safety rules for installation, operation, and maintenance.

Model Nomenclature Guide

Installation Procedures

Pre-Installation Checks and Site Selection

Covers initial site assessment, unit inspection, and location selection before installation.

Unit Mounting and Ducting

Piping, Wiring, and Controls

Start-Up and Operation

Pre-Start-Up System Checkout

Unit Start-Up Procedures

Application Considerations and Water Quality

Performance Data and Motor Specifications

Certified Performance Ratings

Fan Motor Options and Data

Troubleshooting Guide

Compressor and Fan Operation Issues

Addresses common issues like no compressor operation, fan faults, and related error codes.

System Performance and Environmental Faults

Covers troubleshooting for temperature, humidity, and noise issues.

Unit Check Out Sheet

Bosch LV018 Specifications

General

Voltage	208/230V
Refrigerant	R410A
EER Cooling	12.0
Cooling Capacity	18000 BTU/h
Heating Capacity	18000 BTU/h

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