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Mary HaynesSep 8, 2025
Why is my MARLO MR M Controller failing to draw brine?
- MMeagan JacksonSep 9, 2025
If your MARLO Controller fails to draw brine, check the water pressure. It must be at least 30 psi during regeneration.
To Next PageTo Next PageWhy is my MARLO MR M Controller failing to draw brine?
If your MARLO Controller fails to draw brine, check the water pressure. It must be at least 30 psi during regeneration.
Why is my MARLO Controller showing a matching address error?
The most likely cause of a matching address error in your MARLO Controller is having two or more units programmed with the same unit number. To resolve this, ensure that each unit has a unique unit number.
Why is the display on my MARLO Controller flashing?
If the MARLO Controller display is flashing or blinking, it indicates that a power outage has occurred.
How to fix a MARLO Controller when no messages are displayed?
If your MARLO Controller displays no messages or shows small black squares, adjust the contrast button located on the back of the unit until the text becomes visible.
What does "Com Error" mean on my MARLO MR M Controller and how to fix it?
A "Com Error" on your MARLO Controller indicates a communication error. To resolve this, check the system's wiring to ensure it is correct and that all connections are secure.
What causes loss of softening resin and gravel in service lines in MARLO MR M?
To resolve a loss of softening resin with evidence of resin and/or gravel in the service lines of your MARLO Controller, check for damage to the softener under-drain system.
What to do if the diaphragm valve does not close completely on my MARLO MR M?
If the diaphragm valve on your MARLO Controller does not close or seat completely, check that the vent hole is not plugged.
What to do if the diaphragm valve does not open on my MARLO MR M?
If the diaphragm valve on your MARLO Controller does not open, check that the vent hole is not plugged.
What causes high flow to drain during service in MARLO Controller?
If there is high flow to the drain during service with your MARLO Controller, check the position dial. If it is not in position #4, rotate the stager clockwise to this position.
How to fix a format mismatch on my MARLO MR M?
To resolve a format mismatch on your MARLO Controller where units have both U.S. and Metric formats, verify that all units have the same format selected, either all U.S. or all Metric.
Details Marlo's warranty for water treatment products against defects in materials and workmanship.
Provides general arrangement, dimensions, specifications, wiring, and tubing diagrams for the MR 150M-1050M.
Presents dimension charts and specification tables for various Marlo softener models.
Covers general installation, piping, and safety notes, including code compliance and air gaps.
Instructions for loading gravel and resin into the softener tank and installing the brine tank.
Detailed steps for correctly installing the brine tank, ensuring proper level and float settings.
Guides through the initial startup process, controller checks, and basic operational checks.
Explains the Service and Regeneration cycles (Backwash, Brine Draw, Rinse, Fast Flush) and stager function.
Describes the automatic brining system, recommended salt types, and minimum salting adjustments.
Details system configurations, controller features, and operational modes like Standby and Regeneration.
Step-by-step guide for setting up user-specific parameters like water hardness and regeneration time.
Comprehensive flow chart for configuring system type, valve address, regeneration settings, and more.
Explains how to enter and use the Diagnostic Mode to view system status, flow rates, and errors.
Lists part numbers for the MX-III controller components, including the main controller and solenoid.
Details Aquamatic valve repair kits and components for the 2536 Signet flow sensor.
Provides a reference for error messages, their causes, and recommended corrective actions.
General| Brand | MARLO |
|---|---|
| Model | MR M Series |
| Category | Controller |
| Language | English |