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Monarch Water Midi HE CS150 HE - User Manual

Monarch Water Midi HE CS150 HE
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Parts and Service Guide
Europe
Effective November 2019
Monarch HE Series Water
Softeners
‘Suppliers to H.M. the Queen’s Estate at Sandringham’
T +44 (0)1986 784759 F +44 (0)1986 784769
info@monarchwater.co.uk www.monarchwater.co.uk

Table of Contents

Questions and Answers

  • I
    ithompsonAug 22, 2025
    What to do if my Monarch Water Dispenser is using excessive salt?
    • K
      Kristy SandersAug 22, 2025
      If your Monarch Water Dispenser is using excessive salt, it could be due to a few reasons: * The salt setting may be improper. Check the salt usage and salt setting to ensure they are correctly configured. * There might be excessive water in the brine tank. Consult section #5 for troubleshooting this issue. * The programming could be incorrect. Review the programming and reset it as needed to match your water conditions and usage patterns.
  • L
    Lynn KennedyAug 25, 2025
    What to do if my Monarch Water Dispenser has low water pressure?
    • M
      michael61Aug 25, 2025
      If you're experiencing low water pressure with your Monarch Water Dispenser, consider the following: * Iron or scale buildup in the line feeding the unit can restrict water flow. Clean the pipes to remove any deposits. * Iron buildup inside the valve or tank can also cause low pressure. Clean the control and add resin cleaner to clean the bed. Additionally, increase the regeneration frequency. * The inlet of the control might be plugged with foreign material. Remove the piston and clean the control valve to clear any obstructions.
  • E
    evan42Aug 27, 2025
    What to do if Monarch Water Dispenser has excessive water in brine tank / Softener running to overflow?
    • M
      Maria ThomasAug 27, 2025
      If your Monarch Water Dispenser has excessive water in the brine tank or is running to overflow, consider the following: * The injector or screen might be plugged. Clean these parts to ensure proper flow. * There could be foreign material in the brine valve. Clean the valve to remove any obstructions. * The drain line flow control might be plugged. Clean the flow control to ensure proper drainage. * The brine valve may have failed. Replace the brine valve if cleaning doesn't resolve the issue. * The programming could be incorrect. Check the programming and reset it as needed. * Check the injector assembly for possible rolled or twisted O-rings. Replace them if necessary.
  • J
    Jonathan WangAug 28, 2025
    What to do if my Monarch Water Dispenser has resin in drain line?
    • K
      Kyle DiazAug 28, 2025
      If you find resin in the drain line of your Monarch Water Dispenser, here are a couple of possible causes: * There may be air in the water system. Check the well system for a properly functioning air eliminator control. * The drain line flow control (DLFC) button might be incorrect. Check for the proper flow rate to ensure it's correctly configured.
  • C
    Cheryl ThompsonAug 30, 2025
    Why does my Monarch Water Dispenser control cycle continuously?
    • J
      Jose WilsonAug 30, 2025
      If your Monarch Water Dispenser's control cycles continuously, it could be due to: * The timer not operating properly, in which case you should replace the timer. * Faulty micro switches or harness, requiring replacement of the faulty micro switch harness. * Faulty cycle cam operation, which may need replacement or reinstallation of the cycle cam.
  • S
    Scott SheltonSep 3, 2025
    Why does my Monarch Water Dispenser softener fail to regenerate?
    • J
      Jerry TranSep 3, 2025
      If your Monarch Water Dispenser softener fails to regenerate, consider these potential causes: * An interruption in electrical service to the unit. Ensure permanent electrical service by checking the fuse, plug, chain, or switch. Also, check and reset the time of day. * The controller is not operating properly. Replace the controller. * A defective valve drive motor. Replace the drive motor. * Improper programming. Check the programming and reset as needed.
  • J
    James BellSep 4, 2025
    Why is there iron in the softened water from my Monarch Water Dispenser?
    • S
      steven41Sep 4, 2025
      If you notice iron in the softened water from your Monarch Water Dispenser, it could be because: * The iron content exceeds recommended parameters. Consider adding an iron removal pre-filter system. * The resin bed is fouled. Check the backwash, brine draw, and brine tank fill. Increase the frequency of regeneration and backwash time. Ensure the softener does not regenerate at the same time the iron filter backwashes.
  • M
    mkingSep 6, 2025
    Why is there salt water in the service line of my Monarch Water Dispenser?
    • W
      William PrestonSep 6, 2025
      If you're experiencing salt water in the service line of your Monarch Water Dispenser, it could be due to: * A plugged injector system. Clean the injector and replace the screen. * The timer not operating properly. Replace the timer. * Foreign material in the brine valve. Clean or replace the brine valve. * Foreign material in the brine line flow control. Clean the brine line flow control. * Low water pressure. Raise the water pressure. * Improper programming. Check the programming and reset as needed.
  • D
    Daniel ThompsonSep 8, 2025
    Why does my Monarch Water Dispenser softener fail to draw brine?
    • A
      Angela HuntSep 8, 2025
      If your Monarch Water Dispenser softener isn't drawing brine, it could be due to: * A plugged drain line flow control. Clean the drain line flow control. * A plugged injector. Clean or replace the injectors. * A plugged injector screen. Replace the screen. * Line pressure that is too low. Increase the line pressure to at least 20 psi at all times. * An internal control leak. Replace the seals and spacers and/or piston assembly. * Improper programming. Check programming, reset as needed.
  • B
    bucknicoleSep 10, 2025
    What to do if the Main PCB is not working in Monarch Water Dispenser?
    • J
      josephpalmerSep 10, 2025
      If the Main PCB in your Monarch Water Dispenser is not working: * Check the electrical service and transformer to ensure there is power. * If there is power, the PCB may have failed and needs to be replaced.

Summary

Monarch Water Parts and Service Guide

Introduction to Monarch HE Series Water Softeners

General Valve Installation and Setup

Planning and Plumbing Requirements

Guidelines for site selection, plumbing connections, and drain line setup.

Electrical Connection and Water Hardness Testing

Procedure for electrical hookup and method for testing water hardness.

Electronic Controller Configuration

Setting Time of Day and Water Hardness

Steps to configure the softener's time and water hardness settings.

Initial Softener Flush Procedure

Comprehensive Troubleshooting Guide

Water Not Soft Issues

Resolving problems where the water is not sufficiently softened.

Unit Using Excessive Salt

Low Water Pressure Problems

Resin in Drain Line Issues

Overflow and Brine Tank Issues

Resolving excessive water or overflow conditions in the brine tank.

Continuous Control Cycle Problems

Flow to Drain Continuously

Softener Fails to Regenerate

Steps to resolve when the softener does not perform its regeneration cycle.

Iron in Softened Water

Salt Water in Service Line

Softener Fails to Draw Brine

Troubleshooting when the softener cannot draw brine from the salt tank.

Main PCB and Electrical Faults

Resolving issues related to the main PCB, corroded components, and power.

Valve and Component Jamming Issues

Unit Running Out of Capacity

Error Code Interpretation and Resolution

Understanding and resolving specific error codes displayed by the unit.

85 HE System Exploded View and Parts List

System Components Identification

85 HE Control Valve Exploded View

Control Valve Component Breakdown

85 HE Power Head Exploded View

Power Head Component Breakdown

Monarch Water Midi HE CS150 HE Specifications

General IconGeneral
BrandMonarch Water
ModelMidi HE CS150 HE
CategoryWater Dispenser
LanguageEnglish

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