Trane WPWD, EXWA, GSWD manual Troubleshooting Checklist, Insufficient capacity

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Problem

No response to any thermostat setting

Unit short cycles

Insufficient capacity

High pressure switch open

High head pressure

Low suction pressure

Low Pressure switch open

Freezestat open

Troubleshooting

Checklist

Heating

Cooling

Cause

Correction

X

X

Main power off

Check fuses

X

X

Defective control transformer

Replace

X

X

Broken or loose connection

Repair

X

X

Defective thermostat

Replace

X

X

Transformer

Reset Transformer

X

X

Thermostat or sensor improperly located

Relocate

X

X

Low on refrigerant charge

Locate leak, repair and recharge by

weight (not by superheat)

 

 

 

X

X

Restricted thermal expansion valve

Replace

X

X

Defective reversing valve

See WSHP-IOM-# for touch test chart

X

X

Thermostat improperly located

Relocate

X

X

Unit undersized

Recalculate heat gains/losses

X

X

Inadequate water flow

Increase GPM

X

X

Scaling in heat exchanger

Clean or replace

 

X

Water too hot

Decrease temperature

X

 

Water too cold

Increase temperature

 

X

Inadequate GPM

Increase water flow to unit

 

X

Water too hot

Decrease temperature

X

X

Overcharged with refrigerant

Decrease charge

X

X

Defective pressure switch

Check or replace

 

X

Trash in heat exchanger

Backflush

 

X

Low water flow

Increase GPM

X

X

Overcharge of refrigerant

Decrease charge

X

X

Non-condensable in system

Evacuate and recharge by weight

X

X

Water too hot

Decrease temperature

X

X

Undercharged

Locate leak, repair and recharge

X

X

Restricted thermal expansion valve

Repair / replace

X

 

Inadequate GPM

Increase GPM

X

 

Inadequate GPM

Increase GPM

X

 

Water too cold

Increase temperature

X

X

Undercharged with refrigerant

Increase charge

X

X

Defective pressure switch

Replace

 

 

 

Raise water temperature. For smaller

X

X

Heat transfer fluid too cold

tonnage units, switch pressure switch

 

 

 

wires from 35 psig to 7 psig

X

 

Inadequate GPM

Increase GPM

X

 

Water too cold

Increase GPM

X

X

Defective freezestat

Replace freezestat

 

 

 

Replace freezestat. For smaller tonnage

X

 

Heat transfer fluid too cold

units, switch pressure wires from 35 psig

 

 

 

to 7 psig.

28

WSHP-SVX02A-EN

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Contents Installation Owner Diagnostics Later Design SequenceResponsible Refrigerant Practices Contents Fiberglass Wool Pre-installation ChecklistMicrobial Growth General Information Dimensions/Weights/ Clearance Improper Unit LiftDimensions WPWD/GSWD Exwa Installation General Installation ChecksLow Voltage Wiring AC & DC Requirements Hazardous VoltageRacking installation Water ConnectionCleaning and Flushing Water Loop Bled offLoop pump kit installation Supply/Return Pipe Connections to the Loop Pump KitUsing Antifreeze Water heater kitPipe Installation Power Wiring Control Power TransformerInstallation Low Voltage Wiring Controls Using 24 VACPressure switch location What Freezestat Should Be Applied?Electrical Requirements Table E-1 Electrical performance WPWD/EXWAPre-Start Checklist Pre-Start-up ChecklistSequence Operation Initial Unit Start-upOperating Pressures Operating PressuresWater Volume Start-up Checklist and LogFlow Checks PressureStart-up Checklist Log Job Name Model Number Date Serial NumberPreventive Maintenance MaintenanceHazardous Chemicals Warranty Information Warranty Information Standard WarrantyTroubleshooting Hazardous Service ProceduresGeneral Operation Operation with a Conventional ThermostatTroubleshooting Checklist Insufficient capacityUnit Wiring Ton through 6-Ton Equipment Unit Wiring Ton Equipment Trane

GSWD, WPWD, EXWA specifications

Trane is a leading provider of heating, ventilation, and air conditioning (HVAC) systems, and their GSWD, WPWD, and EXWA series are some of the most innovative and efficient products available in the market. These product lines are designed to meet diverse HVAC needs by offering distinctive features, cutting-edge technologies, and remarkable performance characteristics.

The Trane GSWD series is known for its robust design and versatility, making it ideal for various commercial applications. One of the standout features of GSWD units is their modular design, which allows for easy installation and scalability. They are equipped with high-efficiency compressors that contribute to energy savings while ensuring optimal cooling performance. The GSWD series also includes advanced control systems, which enable precise temperature management and system monitoring, leading to improved comfort and reduced operating costs.

On the other hand, the Trane WPWD series focuses on delivering exceptional water-source heat pump solutions. These units stand out for their ability to harness energy from renewable water sources, thereby offering environmentally friendly operation. With a focus on energy efficiency, the WPWD models utilize variable-speed technology that adjusts the compressor's output based on demand, resulting in significant energy savings. Additionally, these models are designed to operate quietly, which enhances the overall comfort of indoor environments.

The EXWA series represents Trane's commitment to innovation in air-to-water heat pump technology. Featuring advanced inverter technology, the EXWA units can efficiently operate across a wide range of environmental conditions. This allows them to deliver reliable heating and cooling performance without compromising efficiency. The EXWA series also emphasizes ease of maintenance, with accessible components designed for quick servicing and reduced downtime.

All three series prioritize user-friendly interfaces, enabling easy system operation and monitoring. Trane incorporates smart technology that promotes connectivity and integration with building management systems, making it easier for operators to manage HVAC systems efficiently.

In summary, the Trane GSWD, WPWD, and EXWA series provide innovative HVAC solutions characterized by energy efficiency, advanced technology, and user-friendly features. Their unique designs cater to various applications, ensuring that they meet modern building requirements while being environmentally responsible and cost-effective. Trane continues to lead the way in HVAC technology, setting benchmarks for performance, reliability, and sustainability in the industry.