Lennox International Inc Dave Lennox Signature Collection XP17 System HEAT PUMPS Alert Status

Page 41

System fault and lockout LED (DS11 / DS14) alarm codes takes precedence over system status LED codes (cooling, heating stages or defrost/dehumidification).Only the latest active LED fault or lockout alarm code if present will be displayed. If no fault or lockout codes are active, then system status LEDs are routinely displayed. See notes 1 and 2 in table below for duration of fast / slow flashes and pause.

Heat Pump Control

icomfort

 

 

 

 

LEDs

Touch®

Condition

Possible Cause(s)

 

Solution

 

 

Thermostat

 

DS11

DS14 Red

 

 

 

 

Display

 

 

 

 

Green

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 fast flash

Not

Single stage

 

 

 

Off

compressor

 

 

 

then pause

applicable

 

 

 

 

heating

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2 fast

Not

 

 

 

 

On

flashes

Defrost

 

 

 

applicable

 

 

 

 

then pause

 

These are codes that show status of operation whether the system is operating in either

 

 

 

 

 

 

 

in first or second stage heating or cooling operation, defrost or in the dehumidification

 

 

 

Single−stage

1 fast flash

 

Not

modes.

 

 

Off

compressor

 

 

 

then pause

applicable

 

 

 

 

cooling

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2 fast

 

Not

Dehumidification

 

 

 

flashes

On

 

 

 

applicable

mode

 

 

 

then pause

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ALERT STATUS

 

 

 

 

 

 

 

 

 

 

Moderate

Device

icomfort Touch® thermostat is unable to communicate with any other device on the

 

 

RSBus. Alarm only occurs if a specific device did communicate initially after power

None

Alert Code

communication

up and communication was later lost. Possible causes are lost connection, bus

 

 

105

failure

 

 

short or open, or other device stop responding.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Message could be sent by any device on RSBus if expected response message is

 

 

Moderate

 

not received from other device. If sent by indoor or heat pump control, device did

 

 

Unresponsive

not get expected response (incorrect or no response at all) from active Subnet

None

Alert Code

device

controller. If sent by the icomfort Touch® thermostat, and did not get the expected

 

 

120

 

 

 

response (incorrect or no response at all) from device. Normally this indicate device

 

 

 

 

 

 

 

 

malfunction.

 

 

 

 

 

 

 

 

 

 

 

 

Device lost connection to icomfort Touch® thermostat. Thermostat is sending

 

 

Critical Alert

Active subnet

heartbeat message in one minute intervals. Device sets this alarm if no Heartbeat is

None

received for three minutes. Normally this indicate lost connection to thermostat, or

Code 124

controller missing

 

 

thermostat is not working. Alert will clear after valid subnet controller message is

 

 

 

 

 

 

 

 

received.

 

 

 

 

 

 

 

 

None

Critical Alert

Hardware Failure

Entire or partial system failure. Alert will clear 300 seconds after fault has

Code 125

recovered.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Moderate /

Internal control

Internal communication on heat pump control. Alert will clear 300 seconds after fault

None

Critical Alert

communication

has recovered.

 

 

 

 

Code 126

failure

 

 

 

 

 

 

 

 

 

 

 

 

 

 

None

Critical Alert

Corrupted control

System stored configuration data is corrupted. System will not run.

Code 131

parameters

 

 

 

 

 

 

 

 

 

 

 

None

Critical Alert

Failed flash CRC

No operations, heat pump control enters boot loader mode. Alarm will clears after

Code 132

check.

reset. Refer to communicating thermostat for memory corrupt handling.

 

 

 

 

 

 

 

 

 

 

 

Moderate

Low pressure

 

1

Remove any blockages or restrictions from coils

Off

Slow flash

Alert Code

1 Restricted air flow over in-

fault

 

and/or fans. Check indoor and outdoor fan motor

 

 

410

door or outdoor coil.

 

 

 

 

 

 

 

 

 

for proper current draws.

 

 

 

 

 

 

 

 

 

2 Improper refrigerant

 

 

 

Critical Alert

Low pressure

2

Check system charge using approach and sub-

Off

On

charge in system.

Code 411

switch lockout

 

cooling temperatures.

 

 

3 Improper metering device

 

 

 

 

 

3

Check system operating pressures and compare

 

 

Moderate

 

installed or incorrect op-

 

 

High pressure

 

to unit charging charts.

 

 

eration of metering device.

 

Slow flash

Off

Alert Code

4

 

fault

Make sure all pressure switches and sensors have

4 Incorrect or improper sen-

 

 

412

 

 

 

 

secure connections to system to prevent refriger-

 

 

 

 

sor location or connection

 

 

 

 

 

 

ant leaks or errors in pressure and temperature

 

 

 

 

 

 

 

Critical Alert

High pressure

to system.

 

On

Off

 

measurements.

Code 413

switch lockout

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Page 41

XP17 SERIES

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Page 40 Page 42
Contents Heat Pumps Table of ContentsGeneral Side View Access View Unit Dimensions −− Inches mmModel Number Identification Base with Elongated LegsControl BOX Typical Unit Parts ArrangementShipping and Packing List Using Manifold Gauge SetOperating Service Valves Operating Ball Type Service Valve Operating Angle Type Service ValveTo Access Service Port Reinstall Stem Cap1DISCONNECT Power Recovering Refrigerant from Existing SystemRecovering Refrigerant 2CONNECT Manifold Gauge SETUnit Placement Placement, Slab Mounting and Stabilizing Unit Detail a Outside Unit PlacementRoof Mounting Removing and Installing PanelsStabilizing Unit on Uneven Surfaces Louvered Panel Removal Louvered Panel InstallationDetail C Detail D Detail aRefrigerant Line SET New or Replacement Line SetRefrigerant Line SET Alling Horizontal Runs Refrigerant Line SET From Vertical to HorizontalBrazing Connections 2CAP and Core Removal 1PIPING Panel Removal and Preparing Line SETFlow Nitrogen Wrap Service ValvesBraze Line SET 7PREPARATION for Next StepFlushing Line Set and Indoor Coil Flushing Line Set and Indoor CoilIndoor Expansion Valve Installation Installing Indoor Expansion ValveSensing Bulb Installation Equalizer Line InstallationLeak Test Leak Test Line Set and Indoor CoilS S S S Evacuating Line Set and Indoor Coil2INSTALL Thermostat Size Circuit and Install DisconnectElectrical 24VAC Transformer4ROUTE High Voltage and Ground Wires 3A. Route Control Wires TingRoute Control Wires Ting Typical XP17 Wiring Heat Pump Control AGE Heat Pump Control A175 Jumpers and TerminalsHeat Pump Control A175 Jumper and Terminal Descriptions Flat metal jumper Field Control WiringFurnace Control Servicing Units Delivered Void of Charge Connections for Testing and ChargingUnit Start−Up System RefrigerantHeating Mode Indoor Airflow Check Cooling Mode Indoor Airflow CheckAdding or Removing Refrigerant Airflowindoor CoilSubcooling Charging Method Using HFC−410A Weigh In MethodAir Handler / Coil Match ups and Targeted Subcooling Values Psig Operating and Temperature PressuresDefrost System System OperationsUnit Sensors Resistor Location Sensor Temperature / Resistance RangeYES Defrost Calibration Sequence of OperationsS S Test Pin E33 FunctionsOr below Low Pressure S87 Switch OperationHigh Pressure Switch S4 Sequence of Operation Input Fault or Miswire Degrees Resistance Fahrenheit 136.3 2680 DS11 and DS14 ATUS, Fault Lockout LED Codes System Status, Fault and Lockout LED CodesResetting Fault and Lockout LED Codes DS15 and DS13 Ault Lockout LED CodesModerate Device Alert Status225ºF 107ºC Lockout Vice removed or Clears after Troubleshooting Field Configuration and TestingFAN Motor B4 Test Procedure FAN Motor Control A177 OPERATION,Fan Motor Control Stage LED Indicator Codes Fan Motor Control Error/Fault LED CodesFan Motor Control RPM, LED Code and DC Voltage Output Fan Motor Control Flash and Pause DurationsTOP Grille Adjustment TOP Grille or FAN Motor Mount Adjustment for FAN ClearanceFAN Motor Position Adjustment Demand BeginsFAN Motor Control A177 PULSE−WIDTH Modulation PWM Testing for External Power to Fan Motor Control Start StripTerminal FinishSnow Guard Top Cover MaintenanceHomeowner SunSource Home Energy System Cooling Mode XP17 Start−Up and Performance ChecklistHeating Mode START−UP Checks
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