Carrier 50PCH specifications Aquazone Deluxe D Control LED Indica, Led, LED Fault Description Code

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stage 2 followed by heating stage 2 then reduces capacity to heating stage 1. Operates for 1 minute per step. DEHUMIDIFICATION TEST — Tests dehumidification mode. Operates for 2 minutes.

AUXILIARY HEATING TEST — Tests auxiliary heat. Sequences fan on and enables heating coil for 1 minute.

H2O ECONOMIZER TEST — Tests entering/returning water loop economizer operation. Sequences fan and opens economizer water valve for one minute.

OPEN VENT DAMPER 100% TEST — Tests outside air (OA) damper operation.

PREPOSITION OA DAMPER — Prepositions OA damper actuator to set proper preload.

NOTE: The auxiliary heating test, H2O economizer test, open vent damper 100% test, and preposition OA damper features will not be visible on the screen unless configured.

Once tests are complete, set unit test back to disable. Unit will automatically reset to disable after 1 hour.

Retry Mode — In Retry mode, the status LED will start to flash slowly to signal that the control is trying to recover from an input fault. The control will stage off the outputs and try to again satisfy the thermostat used to terminal Y. Once the ther- mostat input calls are satisfied, the control will continue normal operation.

NOTE: If 3 consecutive faults occur without satisfying the thermostat input call to terminal Y, the control will go into lockout mode. The last fault causing the lockout is stored in memory and can be viewed by entering Test mode.

TEST LED — Test LED will be activated any time the De- luxe D control is in test mode. The Test LED light is yellow. FAULT LED — Fault LED light is red. The fault LED will al- ways flash a code representing the last fault in memory. If there is no fault in memory, the fault LED will flash code 1 on the and appear as 1 fast flash alternating with a 10-second pause. See Table 31.

Table 29 — Complete C Control Current LED

Status and Alarm Relay Operations

LED STATUS

DESCRIPTION OF OPERATION

ALARM RELAY

 

On

Normal Mode

Open

 

Normal Mode with PM Warning

Cycle (closed 5

 

 

sec., Open 25 sec.)

 

 

 

 

 

 

Off

Complete C Control is

Open

 

non-functional

 

 

 

Slow Flash

 

Fault Retry

 

Open

 

Fast Flash

 

Lockout

 

Closed

Slow Flash

Over/Under Voltage Shutdown

Open (Closed after

15 minutes)

 

 

 

 

 

Flashing Code 1

Test Mode — No fault in memory

Cycling Code 1

Flashing Code 2

Test Mode — HP Fault in memory

Cycling Code 2

Flashing Code 3

Test Mode — LP Fault in memory

Cycling Code 3

Flashing Code 4

Test Mode — FP1 Fault in memory

Cycling Code 4

Flashing Code 5

Test Mode — FP2 Fault in memory

Cycling Code 5

Flashing Code 6

Test Mode — CO Fault in memory

Cycling Code 6

Flashing Code 7

Test Mode — Over/Under shutdown

Cycling Code 7

 

 

 

in memory

 

 

Flashing Code 8

Test Mode — PM in memory

Cycling Code 8

Flashing Code 9

Test Mode — FP1/FP2 Swapped

Cycling Code 9

Fault in memory

 

 

 

 

 

LEGEND

 

 

CO

— Condensate Overflow

LED

— Light-Emitting Diode

FP

— Freeze Protection

LP

— Low Pressure

HP

— High Pressure

PM

— Performance Monitor

Aquazone™ Deluxe D Control LED Indica-

tors — There are 3 LED indicators on the Deluxe D control: STATUS LED — Status LED indicates the current status or mode of the Deluxe D control. The Status LED light is green.

NOTES:

1.Slow flash is 1 flash every 2 seconds.

2.Fast flash is 2 flashes every 1 second.

3.EXAMPLE: “Flashing Code 2” is represented by 2 fast flashes followed by a 10-second pause. This sequence will repeat continually until the fault is cleared.

Table 30 — Complete C Control LED Code and

Fault Descriptions

 

LED

 

 

FAULT

 

DESCRIPTION

 

CODE

 

 

 

 

 

 

 

 

 

 

 

1

 

 

No fault in memory

There has been no fault since the last power-down to power-up sequence

 

2

 

 

High-Pressure Switch

HP open instantly

 

3

 

 

Low-Pressure Switch

LP open for 30 continuous seconds before or during a call (bypassed for first 60 seconds)

 

4

 

 

Freeze Protection Coax — FP1

FP1 below Temp limit for 30 continuous seconds (bypassed for first 60 seconds of operation)

 

5

 

 

Freeze Protection Air Coil — FP2

FP2 below Temp limit for 30 continuous seconds (bypassed for first 60 seconds of operation)

 

6

 

 

Condensate overflow

Sense overflow (grounded) for 30 continuous seconds

7 (Autoreset)

 

 

Over/Under Voltage Shutdown

"R" power supply is <19VAC or >30VAC

 

8

 

 

PM Warning

 

Performance Monitor Warning has occurred.

 

9

 

FP1 and FP2 Thermistors are swapped

FP1 temperature is higher than FP2 in heating/test mode, or FP2 temperature is higher than

 

 

 

 

 

 

 

FP1 in cooling/test mode.

 

 

 

 

LEGEND

 

 

 

FP

— Freeze Protection

LP

—

Low Pressure

 

HP

— High Pressure

 

PM

—

Performance Monitor

LED

— Light-Emitting Diode

 

 

 

37

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Contents Safety Considerations ContentsGeneral InstallationPhysical Data 50PCH,PCV Units Size A50-8695IPT Electric Heat A50-7842efA50-8696 Back Discharge Side DischargeMount the Unit Install Condensate DrainA50-8489 A50-6260efA50-6262ef A50-6261tfMetal Hose Minimum Bend Radii Copper FPT/PVCFitting Wire Field Power SupplyA50-8490 A50-8491 Sensor, Low Temperature Protection Air CoilRVS Reversing Valve SolenoidHpws A50-8492LON A50-8493A50-8440 National Electrical Code Optional Wiring Temperature Switch8697 A50Units with Deluxe D and Wshp Open Multiple Protocol Controls 8698Wshp Open Control A50-8162 50PCH,PCV Unit Electrical DataA50-8441 Wire Field ControlsA50-8442 Rnet Wiring Rnet Wiring SpecificationsField-Supplied Sensors for Wshp Open Controller SPT SensorsPRE-START-UP 50PCH,PCV Blower Performance High-Static Unit 50PCH,PCV Blower Performance Standard UnitFAN Rated MIN PCV Speed Airflow CFMDeluxe D Control Jumper Settings Refer to , 15, Complete C Control Jumper Settings Refer toField Selectable Inputs DIP Switch Block S2 Accessory 2 Relay Options DIP Switch Block S2 Accessory 1 Relay OptionsSTART-UP Operating LimitsWater Temperature Change Through Heat Exchanger Unit Start-Up Cooling ModeOperating Limits 50PCH,PCV Units Cooling Heating Water Flow Rate GPM50PC009 Typical Unit Operating Pressures and Temperatures 50PC006 Typical Unit Operating Pressures and Temperatures50PC012 Typical Unit Operating Pressures and Temperatures Entering Cooling Heating Water50PC018 Typical Unit Operating Pressures and Temperatures 50PC015 Typical Unit Operating Pressures and Temperatures50PC024 Typical Unit Operating Pressures and Temperatures Temp GPM/ton Pressure Heat50PC036 Typical Unit Operating Pressures and Temperatures 50PC030 Typical Unit Operating Pressures and Temperatures50PC042 Typical Unit Operating Pressures and Temperatures Water Air Temp50PC048 Typical Unit Operating Pressures and Temperatures Unit Start-Up Heating Mode50PC060 Typical Unit Operating Pressures and Temperatures Unit Start-Up with Wshp Open ControlsBACview6 Display Interface A50-8444Pressure DROP, psi kPa Coaxial Water Pressure DropGpm 30 F 50 F 70 F 90 F 10 C 21 C 32 C 006 009 Units with Aquazone Complete C Control OperationUnits with Aquazone Deluxe D Control Units with Wshp Open Multiple ProtocolPage Auxiliary Modulating Hot Water/Steam Heating Reheat Complete C and Deluxe D Board System Test LED Status Description of Operation Alarm Relay Complete C Control LED Code Fault DescriptionsLED Fault Description Code Aquazone Deluxe D Control LED IndicaDescription Status LED Test LED ServiceESD A50-6286ef Refrigerant Charging’ to 4’ Air Coil Fan Motor Removal TroubleshootingA50-8163 Air temperature out of range TroubleshootingCooling mode FP1125 F or Reduced or no airflow in heatReduced airflow in cooling Reduced or no water flowAlarm Status Appendix a Wshp Open Screen ConfigurationStatus SensorMaintenance Appendix a Wshp Open Screen ConfigurationSystem Settings ConfigurationSchedule Service Appendix a Wshp Screen Open ConfigurationTest Point Name Password Editable Range Default Level Configuration ServiceScreen Name Alarm Page Copyright 2011 Carrier Corporation II. START-UP 50PCH,PCV START-UP ChecklistCooling Cycle Analysis Heating Cycle AnalysisA50-8445 A50-8446

50PCH specifications

The Carrier 50PCH is a cutting-edge series of air-cooled chillers designed to deliver exceptional cooling performance in a wide range of commercial applications. Engineered with efficiency and reliability in mind, the 50PCH stands out for its innovative technologies and robust construction, making it a preferred choice for facility managers and HVAC professionals.

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The robust construction of the 50PCH series enhances durability and reliability. With an all-weather aluminum cabinet, these chillers are designed to withstand harsh environmental conditions, ensuring long-term performance. The units undergo rigorous testing to meet high industry standards for quality and reliability.

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