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
95 PB
To Remove Existing Thermostat
ELECTRICAL SHOCK HAZARD
– Turn o power at the main service panel by removing
the fuse or switching the appropriate circuit breaker to the OFF position before
removing the existing thermostat.
To Install Thermostat
1. Turn o power to the heating and cooling system by removing the fuse or switching the appropriate
circuit breaker o.
2. Remove cover of old thermostat. This should expose the wires.
3. Label the existing wires with the enclosed wire labels before removing wires.
4. After labeling wires, remove wires from wire terminals.
5. Remove existing thermostat base from wall.
6. Refer to the following section for instructions on how to install this thermostat.
ELECTRICAL SHOCK HAZARD
– Turn o power at the main service panel by removing
the fuse or switching the appropriate circuit breaker to the OFF position before
removing the existing thermostat.
IMPORTANT:
Thermostat installation must conform to local and national building and electrical
outside wall, in direct sunlight, behind a door, or in an area aected by a vent or duct.
codes & ordinances.
Note: Mount the thermostat about five feet above the floor. Do not mount the thermostat on an
1. Turn o power to the heating and cooling system by removing the fuse or switching the
appropriate circuit breaker o.
2. To remove cover, pull gently at the seam at the top.
3. Put thermostat base against the wall where you plan to mount it (Be sure wires will feed through
the wire opening in the base of the thermostat).
4. Mark the placement of the mounting holes.
5. Set thermostat base and cover away from working area.
6. Using a 3/16” drill bit, drill holes in the places you have marked for mounting.
7. Use a hammer to tap supplied anchors in mounting holes.
8. Align thermostat base with mounting holes and feed the control wires through slit in thermal
intrusion barrier and into wire opening.
9. Use supplied screws to mount thermostat base to wall.
10. Insert stripped, labeled wires in matching wire terminals.
CAUTION!: Be sure exposed portion of wires does not touch other wires.
11. Gently tug wire to be sure of proper connection. Double check that each wire is connected to the
proper terminal.
12. Turn on power to the system at the main service panel.
13. Configure thermostat to match the type of system you have.
14. Replace cover on thermostat by snapping it in place.
15. Test thermostat operation as described in “Testing the Thermostat”.
Button Functions
SYS (left) and FAN (right) – Used to enter and exit program operation
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, COOL
and HEAT/COOL modes
FAN (right) – Used to turn on and o the indoor fan
SYS tem (left)
FAN (right)
Down button
Up button
Mode of Operation
RT6P is a 1-stage cool/2-stage heat thermostat. It functions with air conditioning, heat pumps, or
electric heat systems. It is programmable for 7 days a week and has auto changeover capability.
The thermostat activates the heating appliance when the room temperature is below the set heat
temperature (by the dierential temperature). The RT6P 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 to protect your compressor.
When the room temperature is greater than the set cool temperature (by the dierential temperature),
the cooling device is activated. The RT6P 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 to protect your
compressor.
The RT6P has four possible operating modes: OFF , Heat , Cool and Heat/Cool mode. In o mode,
the thermostat will not turn on heating or cooling devices. In heat mode, the thermostat controls the
heating system. In the cool mode, the thermostat controls the cooling system. In the Heat/Cool mode,
the thermostat controls the heating and cooling system
The manual fan can be turned on in all operating modes using the fan button.
In program mode, the thermostat will automatically be controlled by the set program. Program mode
can function with heat mode, cool mode, or heat & cool mode. The clock display alternates with the
set temperature display for heat & cool mode.
The program schedule can be overridden by changing the set temperature (up or down button). This
puts the RT6P thermostat into a 2-hour temporary hold. After 2 hours, it will automatically return to the
program schedule.
AVAILABLE ACCESSORIES
Thermostat - Rt6p