Carel heaterSteam UR006

Questions and Answers

T
thillAug 8, 2025
What to do if my Carel Humidifier control does not turn on?
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  kim22Aug 8, 2025
  If the control on your Carel Humidifier doesn't turn on, several issues could be the cause. First, check the protection devices upstream of the humidifier and the mains power supply to ensure there is electrical power. Next, verify that the humidifier's external switch is in the 'I' (ON) position. Also, check that the connectors are properly installed on the terminal block. Inspect fuses F1/F2 to see if they are blown. Finally, confirm that the transformer's secondary circuit has an output of 24 Vac.
S
Susan WattsAug 13, 2025
Why Carel Humidifier does not start?
- G
  Guy OsborneAug 13, 2025
  If your Carel Humidifier isn't starting, consider these potential causes: * Ensure the remote ON/OFF contact is closed (relay/terminals 7I - 8I). * Verify the external regulator/humidistat or probe is correctly connected. * Check the external signal for any probe/humidistat malfunctions. * Make sure the programming parameters are set correctly. * If the safety thermostat is activated, reset it after identifying and resolving the underlying issue. * If it is H or T control, reset the fan circuit breaker after addressing the problem.
C
Caroline PrinceAug 17, 2025
What to do if the line circuit breaker is activated for Carel Humidifier?
- D
  Dean AdkinsAug 18, 2025
  If the line circuit breaker for your Carel Humidifier is activated, it could be due to two reasons. First, the line circuit breaker may be rated too low; ensure it's rated for a current of at least 1.5 times the humidifier's rated current. Second, resistors might be short-circuited; check the value of the resistors and replace them if necessary.
C
Carolyn CooperAug 22, 2025
How to fix a Carel Humidifier that fills with water but doesn't produce steam?
- R
  Rebecca SmithAug 22, 2025
  If your Carel Humidifier fills with water but doesn't produce steam, consider the following: 1. Check that the steam outlet pipe is not bent or choked, as steam outlet back-pressure might be too high. 2. If there are leaks in the water circuit, replace the feeding solenoid valve and, if required, clean or replace the level gauge due to a leaking flow regulator in the water fill electrovalve. 3. Clean the filter to address any level control malfunction. 4. Clean the fill tank if the cylinder inlet filter is blocked. 5. Check for the presence of 24Vac at the drain solenoid valve and clean the drain solenoid valve if there is lime in the fill tank.
J
Jacqueline VillaAug 27, 2025
Why is my Carel Humidifier wetting the duct?
- J
  Jessica WintersAug 27, 2025
  If your Carel Humidifier is wetting the duct, it could be due to a few reasons. First, check that the steam distributor has been installed correctly. Second, the system may be rated too high, so reduce the steam production set on the control. Lastly, ensure the humidifier isn't active when the duct fan is off by checking the connection of the device (flow switch or differential pressure switch) linked to the humidifier for ventilation in the duct (terminals 7I - 8I).
S
Stephen WoodwardSep 2, 2025
What causes a Carel heaterSteam UR006 Humidifier to wet the floor below it?
- B
  bbruceSep 2, 2025
  If your Carel Humidifier is wetting the floor below, there are several potential causes. First, clean the drain pipe in the bottom tank, as the humidifier drain pipe may be blocked. Second, check the entire hydraulic circuit for leaks in the water supply or overflow circuit. Third, ensure the correct positioning of the condensate drain pipe in the fill tank, as the condensate drain pipe may not be draining the water back to the fill tank. Finally, check the fastening of the pipe clamp on the steam outlet pipe, as the steam outlet pipe may not be properly attached to the cylinder.

Summary

Safety Warnings and Precautions

Electrical Shock Hazard

Humidifier contains live electrical parts; disconnect power before access.

Water Leak Hazard

Malfunctions in connections or humidifier may cause leaks.

Burn Hazard

Humidifier contains hot parts and delivers steam at 100°C.

1. Introduction and Installation

HeaterSteam (UR*) Model Overview

Description of HeaterSteam humidifier models and their features.

Wall Mounting Procedures

Detailed steps for mounting the humidifier on a wall.

2. Hydraulic Connections

Hydraulic Connection Procedure

Step-by-step guide for connecting water supply and drain pipes.

Supply Water Requirements

Specifications and limitations for supply water quality.

3. Steam Distribution

CAREL Jet Distributors Installation

Instructions for mounting and using CAREL jet distributors.

Linear Distributors for Air Ducts

Installation guidelines for linear distributors in air ducts.

Ventilated Steam Distributors for Rooms

Connecting ventilated distributors for room humidification.

Condensate Drain Pipe Installation

Proper installation of condensate drain pipes to prevent issues.

4. Electrical Connections

Power Supply Cable Connection Steps

Detailed instructions for connecting the main power supply.

Control Board Connections and Layout

Wiring and terminal layout of the main control board.

Steam Production Control Signals

Connecting signals for controlling steam production.

Humidity and Ambient Control

Using humidity probes for environmental control.

Alarm Contact Configuration

Setting up the alarm contact for remote signaling.

Final Electrical Connection Checks

Verifying all electrical connections are correct before operation.

5. Supervisor Network

RS485 Supervisor Connection

Connecting the humidifier to a remote supervisor via RS485.

6. Preparing for Operation

Pre-Start Flushing and Checks

Flushing the system and performing preliminary checks.

7. Commissioning

Initiating Humidifier Start-up

Steps to start the humidifier and its initial sequence.

Start-up Sequence Stages

Description of the humidifier's start-up phases: supply, initialization, autotest.

Autotest Procedure Details

Explanation of the automatic self-test and its checks.

Humidifier Shutdown Procedure

Steps for safely draining and shutting down the humidifier.

Parameter Programming Overview

General guidance on accessing and modifying parameters.

Setting the Set Point (St)

Procedure for adjusting the humidity or temperature set point.

Adjusting and Reading Parameters

How to set and view adjustment/reading parameters.

Modifying Configuration Parameters

Steps to modify configuration parameters, including password access.

Counter Reset Procedure

Steps to reset the counter parameter (d4).

Manual Total Drainage Procedure

How to perform a manual total drainage of the humidifier.

8. Configuration Parameters

Parameter Access and Setting Guide

How to access and set various operational and configuration parameters.

Basic Operation Parameters Overview

Parameters controlling basic operation modes and settings.

Auxiliary Function Parameters

Parameters for auxiliary functions like pre-heating and conductivity.

Serial Communication Parameters

Settings for serial communication and data transmission.

Control Parameters for Operation

Measurement Reading Parameters

9. Alarms

Alarm Table and Descriptions

List of alarms, their causes, conditions, and solutions.

Handling Active Alarms and Errors

Alarm Causes, Solutions, and Actions

Detailed breakdown of alarm codes, their causes, and resolution steps.

Autotest Retry Procedure (Fault Tolerance)

Troubleshooting Common Problems

Guide to diagnosing and resolving common operational issues.

10. Spare Parts and Maintenance

Electric Components Overview

General Maintenance Procedures

Routine Maintenance Tasks

Cylinder-Boiler Maintenance Steps

Cylinder-Boiler Maintenance (UR020-UR080)

Fuse Replacement

Heater and PTC Sensor Replacement

Drain Pump Replacement (UR002-UR013)

Solid State Relay (SSR) Replacement

Boiler Heater Electrical Connections

11. Wiring Diagrams

Wiring Diagram: UR002-UR004 Single-Phase 208 V

Wiring Diagram: UR002-UR004 Single-Phase 230 V

Wiring Diagram: UR006 Single-Phase 208 V

Wiring Diagram: UR006 Single-Phase 230 V

Wiring Diagrams: UR006-UR010 (208-575 V) & UR013 Three-Phase (230-575 V)

Wiring Diagram: UR006-UR010-UR013 Three-Phase 400 V

Wiring Diagram: UR020-UR027 Three-Phase (208-575 V)

Wiring Diagram: UR020-UR027 Three-Phase 400 V

Wiring Diagram: UR027 Three-Phase 230 V

Wiring Diagram: UR040-UR053 Three-Phase (460-575 V)

Wiring Diagram: UR040-UR053 Three-Phase 400 V

Wiring Diagram: UR053 Three-Phase 460 V

Wiring Diagram: UR060 Three-Phase 575 V

Wiring Diagram: UR060 Three-Phase (460-575 V)

Wiring Diagram: UR060-UR080 Three-Phase 400 V

Wiring Diagram: UR080 Three-Phase (460-575 V)

13. Advanced Functions

Operating Principle of HeaterSteam

Regulation Principles Overview

ON;OFF Regulation (A0=0)

Slave Control with External Regulator (A0=1)

Independent Control with Humidity Transducer (A0=2)

Independent Control with Humidity Limitation (A0=3)

Setting Alarm Thresholds (H or T Module)