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Danfoss DHP-L - User Manual

Danfoss DHP-L
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USERS MANUAL
DHP-H, DHP-L, DHP-C, DHP-A
Navigate the control computer’s menus using:
To increase or reduce the set values use:
To adjust the room temperature: start by pressing
The degree information that now appears in the display is the
last desired room temperature.
To increase the temperature: press
To lower the temperature: press
The temperature you now require is registered immediately.
(After approximately ten seconds the desired room tempera-
ture appears in the display again, together with other infor-
mation.) The heat pump now starts to work to reach the new
temperature.
VUBMA102

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Questions and Answers

  • E
    ericwilliamsonAug 12, 2025
    What to do if I get a HIGH PRESSURE ERROR on my Danfoss DHP-L Heat Pump?
    • E
      Edwin BakerAug 12, 2025
      If you receive a HIGH PRESSURE ERROR, it means the high pressure switch has tripped, and the compressor has stopped. To address this, acknowledge the alarm by setting the heat pump to operating mode OFF and then back to the desired operating mode.
  • A
    adamskellyAug 16, 2025
    Why am I getting a MOTOR ERROR on my Danfoss DHP-L?
    • G
      gilesraymondAug 16, 2025
      A MOTOR ERROR indicates that the overload relay (overcurrent relay) compressor or the overload relay for the outdoor unit fan has been activated. To fix this, acknowledge the alarm by setting the heat pump to operating mode OFF and then back to the desired operating mode.
  • K
    Kristina HardingAug 20, 2025
    What to do if the Danfoss Heat Pump shows BRINE OUT error?
    • T
      thomashornAug 20, 2025
      The BRINE OUT error indicates that the brine out temperature is less than the set minimum. Consequently, the compressor has stopped. Acknowledge the alarm by setting the heat pump to operating mode OFF and then back to the desired operating mode.
  • M
    Mary StephensonAug 23, 2025
    Why does my Danfoss DHP-L Heat Pump display a LOW BRINE FLOW error?
    • A
      Ashley CoffeyAug 25, 2025
      A LOW BRINE FLOW error occurs because the flow sensor was not active during the last start, causing the compressor to stop. To address this, acknowledge the alarm by setting the heat pump to operating mode OFF and then back to the desired operating mode.
  • M
    markkennedyAug 27, 2025
    What does AUX. HEATER ERROR mean on my Danfoss DHP-L?
    • M
      mariah54Aug 27, 2025
      An AUX. HEATER ERROR indicates that overheating protection has been activated, and there is no auxiliary heater. To clear this error, acknowledge the alarm by setting the heat pump to operating mode OFF and then back to the desired operating mode.
  • M
    Matthew McgeeAug 31, 2025
    What happens when the Danfoss Heat Pump shows OUTDOOR SENSOR error?
    • L
      Larry WoodsAug 31, 2025
      If you see an OUTDOOR SENSOR error, it means there is a fault in the outside sensor. The control system will use zero degrees when calculating the heat demand. You can acknowledge the alarm by setting the heat pump to operating mode OFF and then back to the desired operating mode.
  • K
    Kimberly ContrerasSep 4, 2025
    What does SUPPLY LINE SENSOR error mean for Danfoss DHP-L Heat Pump?
    • G
      gillespierandySep 4, 2025
      A SUPPLY LINE SENSOR error indicates an issue with the supply line sensor. When this occurs, everything stops except the heating system’s circulation pump. To address this, acknowledge the alarm by setting the heat pump to operating mode OFF and then back to the desired operating mode.
  • S
    Sabrina ConradSep 7, 2025
    What does FLOW SENSOR error mean on Danfoss DHP-L Heat Pump DHP-C models?
    • K
      kevin03Sep 7, 2025
      A FLOW SENSOR error indicates that an error has been detected on the flow switch. This applies to DHP-C models. To resolve this, acknowledge the alarm by setting the heat pump to operating mode OFF and then back to the desired operating mode.

Summary

Important Information

Safety Precautions

General safety guidelines for installation, modifications, and valve usage.

Protection Against Corrosion

Precautions against corrosion from sprays and cleaning agents.

About Your Heat Pump

Principles of Function

Explains the working principle and the three fluid circuits of the heat pump.

Components

Details the five basic units comprising the heat pump.

Auxiliary Heat Systems

Covers auxiliary heating systems for DHP-H, DHP-L, DHP-C, and DHP-A models.

Water Heaters

Explains the integrated water heaters for DHP-H, DHP-C, and DHP-A models.

Regulation Information and Heat Curves

Information on regulating heat production and adjusting the heat curve.

Setting ROOM, HEATSTOP, and MIN;MAX Values

Adjusting ROOM value, HEATSTOP, and MIN/MAX supply temperatures.

Integral, Hysteresis, and Temperature History

Explains integral values, hysteresis, and viewing temperature history.

Installation Principles

Illustrates piping installation principles for various heat pump models.

Control Computer

Control Computer Overview and Display

Introduces the control computer, its display, buttons, and basic navigation.

Display Information, Symbols, and Menus

Details display symbols, operating modes, and menu structures.

Setting Operating Modes and Parameters

How to set operating modes and adjust heat curve, temperatures, and times.

Defrost and Other Specific Menus

Managing defrost functions and other model-specific menus.

Trimming the Heating System

Heating System Balancing Procedure

Step-by-step guide to balancing the heating system for optimal performance.

Instructions

Setting Operating Mode and Room Values

Covers setting operating mode and adjusting ROOM values.

Adjusting Curve Values and Temperature Limits

Adjusting CURVE values, specific heat curve parts, MIN/MAX, and HEATSTOP.

Reading Temperatures and Energy Consumption

How to read temperatures and calculate energy consumption.

Manual Defrost (DHP-A)

Procedure for manually initiating the defrost cycle on DHP-A.

Regular Checks

Operation and Alarm Checks

How to check the heat pump's operational status and alarm indicators.

Fluid Level and Safety Valve Checks

Procedures for checking fluid levels and safety valves.

Strainer Cleaning Procedures

Steps to clean strainers in the heating and brine circuits.

Accessories

Room Temperature Sensor

Information about the room temperature sensor accessory.

Troubleshooting

Alarm Messages and Troubleshooting

Details common alarm messages, their causes, and remedies.

Terms and Abbreviations

Technical Glossary

Definitions of key terms and abbreviations used in the manual.

Default Settings in the Control Computer

Default Control Settings

Lists factory and customer specific settings for control computer parameters.

References

Installation and Commissioning Records

Space to record details of installation and commissioning activities.

Danfoss DHP-L Specifications

General IconGeneral
BrandDanfoss
ModelDHP-L
CategoryHeat Pump
LanguageEnglish

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