Service and Parts Manual (2016, 2017, 2018, 2014, 2015, 2013, 2012)
Table Of Contents
- INTRODUCTION
- IMPORTANT SAFETY INFORMATION
- PERSONAL INJURY OR DEATH HAZARDS
- Operation of Equipment in During Construction
- Equipment Identification
- Model and Serial Number Location
- Model and Serial Number information is found on the Manufacturer’s DATA TAG, located on the front or top.
- Model Number Reference Guide
- SERIAL NUMBER REFERENCE GUIDE
- Chassis Specifications
- Small Chassis Dimensions
- Large Chassis Dimensions
- Electrical Data
- Electrical Requirements
- Electrical Ratings Table
- Supply Air Flow and Data
- ELECTRONIC CONTROL BOARD FEATURES
- Electronic Sequence of Operation
- Interface Connector Definitions
- Remote Wall Thermostat
- Remote Wall Thermostat Location
- Desk Control
- Auxiliary Fan Control
- Unit Heat Control Operation - Heat Pump With Electric Heat
- Refrigeration Sequence Of Operation
- Remove The Chassis
- Servicing / Chassis Quick Changeouts
- To Remove the Chassis from the Closet:
- Refrigerant Charging
- Undercharged Refrigerant Systems
- Overcharged Refrigerant Systems
- Restricted Refrigerant System
- Sealed System Method of Charging/ Repairs
- Checking External Static Pressure
- Explanation of charts
- Indoor Airflow Data
- Ductwork Preparation
- Fresh Air Door
- Checking Approximate Airflow
- Electric Heat Strips
- COMPONENT TESTING
- Hermetic Components Check
- Reversing Valve Description And Operation
- Testing The Reversing Valve Solenoid Coil
- Checking The Reversing Valve
- Touch Test Chart : To Service Reversing Valves
- Compressor Checks
- Compressor Replacement -Special Procedure in Case of Compressor Burnout
- Fan Motor
- Capacitors
- Heating Element and Limit Switch
- Drain Pan Valve
- Thermistor Resistence Values (This Table Applies to All Thermistors)
- Testing the Diagnostic Service Module
- Testing the Electronic Control Board
- ELECTRONIC CONTROL BOARD COMPONENTS IDENTIFICATION AND TESTING
- Error Codes and Alarm Status
- Electrical Troubleshooting Chart - Cooling
- 9K Btu, 12K Btu, & 18K Btu
- 24K Btu
- Electrical Troubleshooting Chart - Heat Pump
- Troubleshooting Chart - Cooling
- 9-18K VEA 208/230V
- 9-18K VHA 208/230V
- 9-18K VHA 265V
- 24K VEA 208/230V 2.5/3.4/5.0
- 24K VEA 208/230V 7.5/10.0
- 24K VHA 208/230V 2.5/3.4/5.0
- 24K VHA 208/230V 7.5/10
- 24K VHA 265V 2.5/3.4/5.0
- 24K VHA 265V 7.5/10.0
- VEA9K, VHA9K, VEA12K, VHA12K, VEA18K Figure 901
- AVAILABLE ACCESSORIES
- Thermostat - Rt6
- Thermostat - Rt6p
- Thermostat - WRT1
- Drain Pan
91 PB
AVAILABLE ACCESSORIES
Thermostat - Rt6
Mode of Operation
The RT6 is a 1-stage or 2-stage heat thermostat. It functions with air conditioning, heat pumps, or
electric heat systems.
The thermostat activates the heating appliance when the room temperature is below the set heat
temperature (by the dierential temperature). The RT6 will stop outputting when the call for heat has
been satisfied. With heat pumps, the thermostat will not let the compressor come on for 4 minutes
after it turns o. This protects your compressor.
When the room temperature is greater than the set cool temperature (by the dierential temperature),
the cooling device is activated. The RT6 will stop outputting when the call for cooling is satisfied.
The thermostat will not let the compressor come on for 4 minutes after it turns o. This protects your
compressor.
The RT6 has three possible operating modes: OFF , Heat , and Cool mode. In o mode, the
thermostat will not turn on heating or cooling devices. The manual fan can be turned on in all
operating modes using the fan button. In heat mode, the thermostat controls the heating system. In
the cool mode, the thermostat controls the cooling system.
Button Functions
SYS tem (left)
(right)
Down button
Up button
UP – Used to increase the set temperatures and to adjust configuration settings.
DOWN – Used to decrease the set temperatures and to adjust configuration settings.
SYS (left) – Used to change from OFF, HEAT, and COOL modes
FAN (right) – Used to turn on and o the indoor fan.