HP H2H3, N2H3 manual Comfort Alertt Diagnostics some models, Red Trip LED, On Solid, Yellow Alert

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INSTALLATION INSTRUCTIONS

 

3-phase R-22 Split System Heat Pump

 

 

 

 

 

 

Figure 18

Comfort Alertt Diagnostics (some models)

Status LED

Status LED Description

 

Status LED Troubleshooting Information

Green “POWER”

Module has power

Supply voltage is present at module terminals

Red “TRIP” LED

Thermostat demand signal

1. Compressor protector is open

On Solid

Y1 is present, but the

2. Outdoor unit power disconnect is open

 

compressor is not running

3.

Compressor circuit breaker or fuse(s) is open

 

 

 

 

4.

Broken wire or connector is not making contact

 

 

5.

Compressor power wires not routed through Comfort Alert

 

 

6.

Compressor contactor has failed open

 

 

 

Red “TRIP”

The anti-short cycle timer (3

minutes), in module is preventing compressor restart.

LED Flashing

 

 

 

 

 

 

 

Module locks out compressor when compressor damaging ALERT codes appear. Lockout ALERT codes are noted in the Status LED Description; during a compressor lockout, 24VAC power must be removed from module to manually reset.

Yellow “ALERT”

A short circuit or over

1.

Compressor contact coil shorted

LED On Solid

current condition exists on

2.

Electrical load too high for PROT circuit (maximum) 1 amp

 

PROT terminal

3.

24 VAC wired directly to PROT terminal

 

 

 

 

 

 

Yellow “ALERT”

System Pressure Trip

1.

High head pressure

Flash Code 2

Discharge or suction

2.

Condenser coil poor air circulation (dirty, blocked, damaged)

 

pressure out of limits or

 

3.

Condenser fan is not running

 

compressor overloaded (if

 

no high pressure switch in

4.

If low pressure switch present in system, check Flash Code 3

 

system) LOCKOUT

 

information

 

 

 

 

Yellow “ALERT”

Short Cycling

1.

If low pressure switch is open:

Flash Code 3

Compressor is running only

 

a. Low refrigerant charge

 

briefly LOCKOUT

 

b. Evaporator bower is not running

 

 

 

c. Evaporator coil is frozen

 

 

 

d. Faulty metering device

 

 

 

e. Condenser coil is dirty

 

 

 

f. Liquid line restriction

 

 

2. If high pressure switch present go to Flash Code 2 information

 

 

3.

Intermittent thermostat demand signal

 

 

4.

System or control board defective

 

 

 

 

Yellow “ALERT”

Locked Rotor

1.

Low line voltage to compressor

Flash Code 4

LOCKOUT

2.

Excessive liquid refrigerant in compressor

 

 

3.

Compressor bearings are seized

 

 

 

 

Yellow “ALERT”

Open Circuit

1.

Outdoor unit power disconnect is open

Flash Code 5

 

2.

Compressor circuit breaker or fuse(s) is open

 

 

3.

Compressor contactor has failed open

 

 

4.

High pressure switch is open and requires manual reset

 

 

5.

Broken supply wires or connector is not making contact

 

 

6.

Unusually long compressor protector reset time due to

 

 

 

extreme ambient temperature

 

 

7.

Compressor windings are damaged

 

 

 

 

Yellow “ALERT”

Missing Phase

1.

Compressor fuse is open on one phase

Flash Code 6

LOCKOUT

2.

Broken wire or connector on one phase

 

 

3.

Compressor motor winding is damaged

 

 

4.

Utility supply has dropped one phase

 

 

 

 

Yellow “ALERT”

Reverse Phase

1.

Compressor running backward do to supply phase reversal

Flash Code 7

LOCKOUT

 

 

 

 

 

 

Yellow “ALERT”

Welded Contactor

1.

Compressor contactor has failed closed

Flash Code 8

Compressor always runs

2.

Thermostat demand signal not connected to module

 

 

 

 

Yellow “ALERT”

Low Voltage

1.

Control circuit transformer is overloaded

Flash Code 9

Control circuit < 18VAC

2.

Low line voltage to compressor

S Flash Code number corresponds to a number of LED flashes, followed by a pause and then repeated. S TRIP and ALERT LEDs flashing at same time means control circuit voltage is too low for operation.

S Reset ALERT Flash code by removing 24VAC power from module.

S Last ALERT Flash code is displayed for 1 minute after module is powered on.

S ALERT codes can be reset manually or automatically. ALERT codes that result in a lockout or compressor lockout can only be reset manually.

-For manual reset, cycle power to Comfort Alert off and on.

-For automatic reset, Comfort Alert will continue to monitor compressor and system; if condition returns to normal, the ALERT code is automatically turned off.

506 01 5001 00

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Contents Table of Contents Installation InstructionsClearances Safety ConsiderationsInspect NEW Unit LocationClearances various examples Refrigeration System Unit SupportUnit Operation Hazard Installation Instructions Product Damage HazardRefrigerant Line Sets Personal Injury HazardLiquid Line FILTER-DRIER Outdoor Unit Higher than Indoor UnitBrazing Connections Fire Hazard Service ValvesOpening Service Valves Gauge Ports Electrical WiringThermostat Wiring Connections Defrost Control Board Defrost SystemDefrost Thermostat Defrost ThermostatRefrigerant Charge START-UP ProcedureCooling Mode Heating ModeSequence of Operation Cooling Mode Heating ModeMaintenance TroubleshootingRed Trip LED Comfort Alertt Diagnostics some modelsYellow Alert Missing Phase Yellow Alert Reverse PhaseTrip LED and Alert LED Alert Flash CodeAlert Flash Code 5 or