Installation Manual

21
If the unit does not operate properly in the cooling mode,
checkthefollowing:
• Thethermostatisoperatingproperly.
• Electricalpowertotheunitisturnedon.
• Allsafetyswitchesareclosed.
• Theservicedoorsareinplace.
• Transformercircuitbreakerisreset.
If the unit does not operate properly in the heating mode,
checkthefollowing:
• Thethermostatisoperatingproperly.
• Electricalpowertotheunitisturnedon.
• Allsafetyswitchesareclosed.
• Thegasisonandshut-offvalveisopen.
• Theservicedoorsareinplace.
• Theameroll-outcontrolisclosed.
• RefertothediagnosticcodesinTable2orthewiring
diagram (Figure 15, page 38).
• Transformercircuitbreakerisreset.
STATUS LIGHT
(RedLED)
FAULT
CONDITION
ContinuousON OperationNormal
2 Flashes
Pressure / centrifugal switch open with
inducer on
3 Flashes
Pressure / centrifugal switch closed with
inducer off
4 Flashes Lockout from too many failed ignition tries
5 Flashes Lockout from too many flame losses
6 Flashes High temperature switch open
7 Flashes Rollout switch open
8 Flashes Flame present with gas off
9 Flashes
Exceeded max limit trips (5) in one call for
heat
10 Flashes Gas valve fault
Table2.DiagnosticCodesFor6-10TonUnits
Condenser Fan
Assemblies
High/Low
Pressure Switch
Protection
Liquid Line
Filter Driers
High Efficiency
Compressors
with Crankcase
Heaters
Belt Drive
Blower Motor
Knockout
for Bottom
Power Entry**
3/4” PVC
Condensate
Drain
Permament Baserail -
No Need for Removal
with Roof Curb
Knockout for
Bottom Power
Entry
Control Wiring Entry
Power Wiring Entry
Condenser Coils
Electrical
Disconnect
Mounting
Panel +
Easy Access
Control Panel
Durable Pre-Coat
Paint
Quick Release
Filter Panel
Evaporator Coils
Exhaust Vent
Gas Line Inlet
Flame
Observation
Combustion
Air Inlet
+ Field Supplied
** Field Installed Kit Required
Figure 11. Location of Unit Components
Model R6GP-120C235C Shown
TROUBLESHOOTING