Lennox International Inc 506586-01 installation instructions Clears after

Page 44

Heat Pump Control

icomfort

 

 

 

 

 

 

 

LEDs

 

 

 

 

 

 

 

 

 

Touch®

 

 

Possible

 

 

 

 

 

 

 

 

Condition

Solution

Clearing Status

DS15

 

DS13

Thermostat

 

Cause(s)

 

 

 

 

 

 

 

Yellow

 

Red

Display

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Compressor has

1

Run capacitor has failed.

 

 

 

 

 

 

 

a locked out due

2

Low line voltage (contact utility if voltage at discon-

Clears after

4 flashes

 

 

Critical Alert

 

 

to run capacitor

 

nect is low).

power reset or

 

Off

 

Locked rotor

short, bearings

 

four normal

 

 

 

 

 

then pause

 

Code 404

 

 

S

Check wiring connections

 

 

 

 

are seized,

 

compressor

 

 

 

 

 

 

3

Excessive liquid refrigerant in the compressor.

 

 

 

 

 

 

excessive liquid

cycles.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

refrigerant.

4

Compressor bearings are seized.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

Outdoor unit power disconnect is open.

 

 

 

 

 

 

 

 

2

Unit circuit breaker or fuse(s) is open.

 

 

 

 

 

 

 

 

3

Unit contactor has failed to close.

 

 

 

 

 

 

 

 

 

S

Check compressor contactor wiring and

 

 

 

 

 

 

 

 

 

 

connectors

 

 

 

 

 

 

 

 

 

S

Check for compressor contactor failure

 

 

 

 

 

 

 

 

 

 

(burned, pitted or open)

 

 

 

 

 

 

 

Compressor has

 

S Check wiring and connectors between supply

Clears after one

 

 

 

 

 

 

an open circuit

 

 

 

 

 

 

 

 

 

and compressor

normal com-

5 flashes

 

 

Critical Alert

 

 

due to power dis-

 

 

 

Off

 

Open circuit

 

S

Check for low pilot voltage at compressor

pressor run

then pause

 

Code 405

 

connection, fuse

 

 

 

 

 

 

 

contactor coil

cycle or power

 

 

 

 

 

 

is open or other

 

 

 

 

 

 

 

 

4

 

 

reset.

 

 

 

 

 

 

similar conditions.

High pressure switch is open and requires manual

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

reset.

 

 

 

 

 

 

 

 

5

Open circuit in compressor supply wiring or

 

 

 

 

 

 

 

 

 

connections.

 

 

 

 

 

 

 

 

6

Unusually long compressor protector reset time

 

 

 

 

 

 

 

 

 

due to extreme ambient temperature.

 

 

 

 

 

 

 

 

7

Compressor windings are damaged.

 

 

 

 

 

 

 

 

 

S Check compressor motor winding resistance

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

Run capacitor has failed.

 

 

 

 

 

 

 

 

2

Open circuit in compressor start wiring or

Clears when

6 flashes

 

 

Critical Alert

 

Open start

Current not

 

connections.

amperage is de-

 

 

 

 

 

 

tected in RUN

 

Off

 

sensed by Start

 

S Check wiring and connectors between supply

then pause

 

Code 406

 

circuit

 

and START

 

 

 

 

 

 

transformer.

 

 

and the compressor S terminal

sensors, or after

 

 

 

 

 

 

 

3

Compressor start winding is damaged.

 

 

 

 

 

 

 

power reset.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

S Check compressor motor winding resistance

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

Open circuit in compressor start wiring or

Clears when

 

 

 

 

 

 

 

 

connections.

 

 

 

 

 

 

 

 

amperage is de-

 

 

 

 

 

 

Current not

 

 

 

7 flashes

 

 

Critical Alert

 

Open run

 

S Check wiring and connectors between supply

tected in RUN

 

Off

 

sensed by run

 

then pause

 

Code 407

 

circuit

 

 

and the compressor R terminal

and START

 

 

 

transformer.

 

 

 

 

 

 

 

 

2

Compressor start winding is damaged.

sensors, or after

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

S Check compressor motor winding resistance

power reset.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

Clears after one

8 flashes

 

 

Critical Alert

 

Welded

Compressor

Compressor contactor failed to open.

normal com-

 

Off

 

2

Thermostat demand signal not connected to mod-

pressor run

then pause

 

Code 408

 

contactor

always runs

 

 

 

 

ule.

 

cycle or after

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

power reset.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

Control circuit transformer is overloaded.

Clears after volt-

 

 

 

Moderate/

 

 

 

age is higher

 

 

 

 

 

 

2

 

 

9 flashes

 

 

 

Secondary low

24VAC is below

Low line voltage (contact utility if voltage at discon-

than 20VAC for

 

Off

Critical Alert3

 

then pause

 

 

voltage

18VAC.

 

nect is low).

two seconds, or

 

 

Code 409

 

 

 

 

 

 

 

 

 

S

Check wiring connections

after power re-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

set.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fast simultaneous flashing of DS11,

 

OEM Mode

Factory test mode.

 

 

 

 

DS13, DS14 and DS15

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1. Pause duration is two (2) seconds.

 

 

 

 

 

 

2. Fast flash duration is 1/2 second. Slow flash duration is one (1) second.

3. Initially a moderate status is displayed and is escalated to critical if alarm exists for more than 10 minutes.

Page 44

506586−01 10/10

Page 43 Page 45
Image 44
Page 43 Page 45
Contents Heat Pumps Table of ContentsGeneral Unit Dimensions −− Inches mm Side View Access ViewModel Number Identification Base with Elongated LegsTypical Unit Parts Arrangement Control BOXShipping and Packing List Using Manifold Gauge SetOperating Service Valves Operating Angle Type Service Valve Operating Ball Type Service ValveTo Access Service Port Reinstall Stem CapRecovering Refrigerant from Existing System 1DISCONNECT PowerRecovering Refrigerant 2CONNECT Manifold Gauge SETUnit Placement Detail a Outside Unit Placement Placement, Slab Mounting and Stabilizing UnitRoof Mounting Removing and Installing PanelsStabilizing Unit on Uneven Surfaces Louvered Panel Installation Louvered Panel RemovalDetail C Detail D Detail aNew or Replacement Line Set Refrigerant Line SETRefrigerant Line SET From Vertical to Horizontal Refrigerant Line SET Alling Horizontal RunsBrazing Connections 1PIPING Panel Removal and Preparing Line SET 2CAP and Core RemovalWrap Service Valves Flow NitrogenBraze Line SET 7PREPARATION for Next StepFlushing Line Set and Indoor Coil Flushing Line Set and Indoor CoilInstalling Indoor Expansion Valve Indoor Expansion Valve InstallationSensing Bulb Installation Equalizer Line InstallationLeak Test Line Set and Indoor Coil Leak TestEvacuating Line Set and Indoor Coil S S S SSize Circuit and Install Disconnect 2INSTALL ThermostatElectrical 24VAC Transformer4ROUTE High Voltage and Ground Wires 3A. Route Control Wires TingRoute Control Wires Ting Typical XP17 Wiring Heat Pump Control A175 Jumpers and Terminals Heat Pump Control AGEHeat Pump Control A175 Jumper and Terminal Descriptions Field Control Wiring Flat metal jumperFurnace Control Connections for Testing and Charging Servicing Units Delivered Void of ChargeUnit Start−Up System RefrigerantCooling Mode Indoor Airflow Check Heating Mode Indoor Airflow CheckAdding or Removing Refrigerant Airflowindoor CoilUsing HFC−410A Weigh In Method Subcooling Charging MethodAir Handler / Coil Match ups and Targeted Subcooling Values Operating and Temperature Pressures PsigSystem Operations Defrost SystemResistor Location Sensor Temperature / Resistance Range Unit SensorsDefrost Calibration Sequence of Operations YESTest Pin E33 Functions S SLow Pressure S87 Switch Operation Or belowHigh Pressure Switch S4 Sequence of Operation Input Fault or Miswire Degrees Resistance Fahrenheit 136.3 2680 System Status, Fault and Lockout LED Codes DS11 and DS14 ATUS, Fault Lockout LED CodesResetting Fault and Lockout LED Codes DS15 and DS13 Ault Lockout LED CodesAlert Status Moderate Device225ºF 107ºC Lockout Vice removed or Clears after Field Configuration and Testing TroubleshootingFAN Motor B4 Test Procedure FAN Motor Control A177 OPERATION,Fan Motor Control Error/Fault LED Codes Fan Motor Control Stage LED Indicator CodesFan Motor Control RPM, LED Code and DC Voltage Output Fan Motor Control Flash and Pause DurationsTOP Grille or FAN Motor Mount Adjustment for FAN Clearance TOP Grille AdjustmentFAN Motor Position Adjustment Demand BeginsFAN Motor Control A177 PULSE−WIDTH Modulation PWM Testing for External Power to Fan Motor Control Strip StartTerminal FinishMaintenance Snow Guard Top CoverHomeowner SunSource Home Energy System XP17 Start−Up and Performance Checklist Cooling ModeHeating Mode START−UP Checks
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