Table of Contents
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Room Air Conditioners
Standard Chassis R-410A Models
208-230-Volt:
208-230-Volt: ES12M33, ES15M33, EM18M34, EM24M35, EL36M35
208-230-Volt: YS12M33, YM18M34, YL24M35
Kuhl-ServMan (5-10)
AUTO
°F °C
AUTO
CONTINUOUS
AUTO
SYSTEM
FAN MODE
SCHEDULE
FAN SPEED
Cool Only
115-Volt:
SS08M10, SS10M10, SS12M10, SS14M10
SS12M30, SS15M30, SM18M30, SM21M30
SM24M30, SL28M30, SL36M30
Cool with Electric Heat
Heat Pump with Electric Heat
Heat Pump
115-Volt: YS10M10
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Table of Contents
Troubleshooting
Related Manuals for Friedrich K?hl+ ES12M33
Summarization of Contents
Important Safety Information
Personal Injury or Death Hazards
Details electrical, handling, and other personal safety warnings.
Refrigeration System Repair Hazards
Safety precautions for working with refrigerant systems, including tools and procedures.
Mechanical Hazards
Safety guidelines for handling moving parts, sharp edges, and general unit components.
Property Damage Hazards
Warnings related to fire and water damage prevention during operation and servicing.
Introduction
Unit Identification and Location
Overview of the manual's purpose and how to find model and serial numbers.
Unit Identification
Model and Serial Number Decoding
Explains the structure of model numbers and serial numbers for identification.
Installation Information and Sleeve Dimensions
Circuit Rating and Breaker Information
Details sleeve dimensions, window width, and electrical circuit requirements for installation.
Before Operating Your Unit
Power Cord and LCDI Testing
Instructions for ensuring correct wiring, receptacles, and testing the LCDI power cord.
Control Panel Operation
Understanding Control Panel Functions
Explains display elements, power, system, fan, and navigation buttons for unit control.
Alerts
System Alerts and Notifications
Describes various system alerts like filter check, maintenance required, wait, freeze protection, and low battery.
Special Control Functions
Covers panel lock, filter reset, and user menu functions for customizing unit operation.
Remote Control Operation
Remote Control Usage and Effectiveness
Details how to operate the unit using the remote control and its effective range.
Electronic Control System Maintenance
Introduction, Display, and Testing
Overview of the maintenance system, display icons, and how to test the display functionality.
Maintenance Menu Operations
Accessing Maintenance Menus
Explains how to access maintenance menus (M1-M6) and their general purpose.
Specific Maintenance Menu Functions
Temperature Limits and Test Modes
Details M1 (Temp High Limit), M2 (Temp Low Limit), and M3 (Test Mode Access).
Unit Configuration and Error Logging
Details M4 (Unit Configuration), M5 (Error Codes/History), and M6 (Factory Use).
Unit Operation
Front Panel Operation Modes
Explains system mode sequences for cool-only and heat-cool units via the front panel.
Electronic Control Sequence of Operation
Compressor and Reversing Valve Control
Describes how compressor and reversing valve states change based on active mode.
Cooling Mode Operation
Details the sequence of operation for the cooling cycle, including fan and compressor delays.
Heating Mode Control Operation
Heat Pump Only Heating Control
Explains the operation sequence for heat pump heating, including demand thresholds and fan delays.
Heat Pump with Electric Heat Operation
Heating Operation Modes
Details heating operations involving heat pump and electric heat, including conditions and features.
Automatic Change Over Delay
Explains the delay function to prevent unwanted changeover between heating and cooling modes.
Compressor and Fan Operation Details
Compressor Lock Out and Wait Icon
Explains compressor lockout timers and the wait icon function.
Fan Operation Modes and Delays
Details fan delays, fan-only mode, and rules for fan operation.
Fan Operation (Front Panel Mode)
Fan Speed and Icon Details
Illustrates fan speeds, icons, and mapping for front panel control.
Fan Relay Mapping
Shows how fan speeds are mapped to relays for WallStat and Front Panel control.
Unit Operation with a Wall-Stat
Wall-Stat Mode Operation
Describes front panel behavior, thermostat requirements, and operation during heat mode when using a wall thermostat.
Low Voltage Interface Connector
Remote Thermostat Connections
Explains the interface connector and how to connect a remote wall thermostat.
Airflow Selection and Adjustment
Airflow Direction and Fresh Air/Exhaust Control
Instructions for adjusting airflow direction and using fresh air/exhaust functions.
Desk Control and Auxiliary Fan Control
Describes connecting external switches for unit control and activating auxiliary fans.
Components Testing
Fan Motor and Capacitor Testing
Procedures for testing fan motors and capacitors, including safety warnings.
Capacitor Connections and Analyzer Use
Explains how to connect capacitors and use a capacitor analyzer for testing.
Component Testing - Heating Elements and Drain Pan
Heating Element and Drain Pan Valve Testing
Guides for testing heating elements and understanding drain pan valve operation.
R-410A Sealed Refrigeration System Repairs
Equipment Requirements and Refrigerant Charging
Lists required equipment and procedures for refrigerant charging and system repairs.
Refrigerant System Diagnosis
Undercharged and Overcharged Systems
Identifies symptoms and causes of undercharged and overcharged refrigerant systems.
Hermetic Components Check
Metering Device and Check Valve
Procedures for checking metering devices and the two-way check valve.
Cooling and Heating Mode Operation
Explains check valve operation during cooling and heating modes.
Testing the Reversing Valve
Solenoid Coil and Operation Check
Guides for testing the reversing valve solenoid coil and its operational shifting.
Reversing Valve Touch Test and Replacement
Touch Test Procedure
Describes the touch test to diagnose reversing valve issues.
Reversing Valve Replacement Procedure
Step-by-step instructions for replacing the reversing valve, including safety precautions.
Compressor Checks
Electrical Tests (LRV, Amperage)
Procedures for performing locked rotor voltage and amperage tests on the compressor.
Overload Checks
Steps to check external and internal compressor overloads for continuity.
Compressor Electrical and Efficiency Tests
Resistance and Ground Tests
How to perform resistance tests and ground checks on compressor terminals.
Compressor Efficiency Check
Diagnosing compressor inefficiency by checking pressures and temperature differences.
Motor Compressor Burnout Procedure
Special Troubleshooting for Rotary/Scroll Compressors
Procedure for cleaning the system after a burnout and special notes for rotary/scroll compressors.
Routine Maintenance
Cleaning Coils, Base Pan, and Blower Components
Instructions for cleaning major internal and external components of the unit.
Electrical, Mechanical, and Motor Checks
Guidance on periodically inspecting and testing electrical, mechanical parts, and motors.
Sleeve, Drain, and Cover Checks
Routine checks for proper installation clearances, sleeve, drain system, and front cover.
Post Maintenance/Repair Procedures
Start-up Checklist and Notes
Checklist for ensuring proper installation and operation after maintenance or repair.
Control Panel Battery Change
Procedure for replacing the backup battery for the control panel.
Service and Assistance
Obtaining Service and Support
How to get help, contact information, and what information to have ready.
Available Accessories
Lists optional accessories like drain kits, filter kits, and thermostats.
Unit Performance Test Data Sheet
Performance Data Sheet and Sizing Guide
Forms for recording unit performance tests and a guide for sizing air conditioners.
Troubleshooting Tips
General Troubleshooting
Common problems and their possible causes and solutions for unit operation.
Cooling Only Room Air Conditioner Troubleshooting
Troubleshooting by Problem Area
Specific troubleshooting tips for cooling-only models based on component issues.
Heat Pump Room Air Conditioner Troubleshooting
Refrigerant System Diagnosis (Cooling Cycle)
Diagnosing refrigerant system issues in cooling mode for heat pumps.
Electrical Troubleshooting Chart (Heat Pump)
Troubleshooting electrical issues related to heat pump operation.
Refrigerant System Diagnosis (Heating Cycle)
Diagnosing refrigerant system issues in heating mode for heat pumps.
Reversing Valve Troubleshooting Touch Test
Touch Test Procedure
Using a touch test to diagnose reversing valve issues.
Reversing Valve Replacement Procedure
Step-by-step instructions for replacing a reversing valve, including safety precautions.
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