Bard P1224A2 Motor starts but runs erratically, Excessive noise, ∃ Perform Moisture Check

Page 26

SYMPTOM

Motor starts but runs erratically

∃Varies up and down or intermittent

∃"Hunts" or puffs" at high CRM (speed)

∃Stays at low CFM despite sysstem call for cool or heat CFM

∃Stays at high CFM

∃Blower wo'nt shut off

SYMPTON

Excessive noise

∃Air Noise

CAUSE / PROCEDURE

∃Check line voltage for variation or "sag"

∃Check low voltage connections (G, Y, W, R, C) at motor; unseated pins in motor harness connectors

∃Check "Bk" for erratic CFM command (in variable speed applications

∃Check out system controls - thermostat?

∃Perform Moisture Check

∃Does removing panel or filter reduce "puffing"?

–Reduce restriction

–Reduce maximum airflow

∃Check low voltage (thermostat) wires and connections

∃Verify fan is not in dalay mode - wait until delay is complete

∃"R" missing / not connected at motor Perform motor / control replacement check

∃"R" missing / not connected at motor

∃Is fan in dalay mode? - wait until delay time complete

∃Current leakage from controls into G, Y or W?

–Check for Triac switched thermostat or solid state relay

CAUSE / PROCEDURE

∃Determine if it is air noise, cabinet, duct or motor noise . Interview customer if necessry.

∃High static creating high blower speed?

–Is airflow set properly?

–Does removing filter cause blower to slow down? Check / replace filter

–Use low pressure drop filter

–Check / correct duct restirctions

DO

∃Size the equpment wisely

∃Check orientation before inserting motor connectors

DON'T

∃Oversize system then compensate with low airflow

∃Plug in power connector backwards

∃Force plugs

MOISTURE CHECK PROCEDURE

COMFORT CHECK PROCEDURE

∃

Connectors are oriented "down"

∃

Check proper airflow settings

∃

Arrange harnesses with "drip loop" under motor

∃

Low static pressure for lowest noise

∃

Condenste drain plugged?

∃

Set low continuous fan CFM

∃ Check for low airflow (too much latent capacity)

∃

Use humidistat and 2-speed cooling units

∃

Check for undercharged condition

∃

Use zoning controls designed for ICM that regulate CFM

∃ Check and plug leaks in reutrn ducts and cabinet

∃

Thermostat in bad location?

 

 

 

 

Manual

2100-353

 

 

Page

24

 

 

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Contents Installation Instructions Single Package AIR Conditioners Contents Getting Other Information and Publications For More INFORMATION, Contact These PublishersShipping Damage Field Installed Heater Packages OptionalGeneral Instructions GeneralCompressor Circuit a Electrical SpecificationsHz Circuit a Fan Motor and Condenser414 Fan Motor and Condenser Is left blank Heater Package Volts Model PhaseThis column IntentionallyHtr. Amps Fuses Circuits Ampacity Protection Optional Field Installed Electric Heater TableHtr. KW Circuit B Capacity @ 240 Volts @ 208 Volts SizeDimensions of Units Location InstallationTypical Installations Airflow and Service Access Clearances Slab Mounting AT Ground LevelRoof TOP Application Elevated Mounting PlatformsMIS-1177C Roof Curb Details Dimension for X in FIGUnit Model Roof Hood Dimension Field Fabricated CurbingFilter Requirements & Sizes Condensate Drain TrapAIR Filters Condensate Drain TrapTransformer Taps Wiring Main PowerWiring 24V LOW Voltage Control Circuit ThermostatsLOW Voltage Wiring Start UP and Operation Alarm Output AdjustmentsLOW Pressure SWITCH, BYPASS, and Lockout Sequence Adjustable DELAY-ON-MAKE and DELAY-ON-BREAK TimerPressure Service Ports Service and TroubleshootingService Hints FAN Blade SettingsIndoor Blower Perfomance Brazing DiagramSuction and Discharge Tube Brazing ESP P1124A3 P1130A2 P1136A2 P1142A3 P1148A2 P1060A1Pressure Table Return Air Pressure 100 105 110 115 ModelPressure Table ∃ Run Mositure Check Troubleshooting ECM Blower MotorsMotor rocks slightly when starting Motor wont start Evidence of Moisture∃ Perform Moisture Check Motor starts but runs erraticallyExcessive noise Page Page Page Page Page Page Page

P1124A3, P1224A2 specifications

The Bard P1224A2 and P1124A3 are advanced heating solutions designed to meet the demanding needs of commercial and residential spaces. These models reflect Bard's commitment to quality, efficiency, and innovation in the HVAC (Heating, Ventilation, and Air Conditioning) industry.

At the heart of the Bard P1224A2 and P1124A3 is their robust design, engineered for durability and long-lasting performance. The P1224A2 model is specifically tailored for applications requiring efficient heating and cooling across diverse environmental conditions. It boasts an exceptional heating capacity, making it suitable for moderate to large spaces, while also providing reliable climate control during the warmer months. The P1124A3, on the other hand, focuses on energy efficiency and versatility, making it an ideal choice for various settings including schools, offices, and healthcare facilities.

Both models utilize advanced technologies that enhance their operational efficiency. They incorporate high-performance compressors designed to optimize energy consumption without sacrificing output. The energy-efficient design of these units not only lowers operational costs but also contributes to reducing the overall carbon footprint, making them environmentally friendly options.

In terms of features, the Bard P1224A2 and P1124A3 are equipped with state-of-the-art controls that enable users to easily adjust settings for maximum comfort. The intuitive interface allows for precise temperature adjustments and scheduling options, ensuring a consistent and pleasant indoor environment. Additionally, these units are compatible with smart building systems, which can be integrated for remote monitoring and control.

Noise reduction technology is another key characteristic of these models. Their design minimizes operational noise, which is crucial for environments where sound levels are critical, such as educational institutions and medical facilities.

Lastly, both the P1224A2 and P1124A3 feature a compact footprint, ensuring flexible installation options even in tight spaces. Their rugged construction is built to withstand harsh weather conditions, providing peace of mind and reliability year-round.

In conclusion, the Bard P1224A2 and P1124A3 stand out in the HVAC market due to their exceptional efficiency, advanced technology, and user-friendly features. They represent a solid investment for anyone looking to improve climate control in their buildings while also prioritizing sustainability and cost-effectiveness.
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