PVI Industries PV500-44U manual Troubleshooting Guide, Problem Probable Cause Corrective Action

Page 33

15 TROUBLESHOOTING GUIDE

Problem

Probable Cause

Corrective Action

 

Power Supply

Check fuse and/or circuit breaker. Check voltage at

 

120/24V step-down transformer.

 

 

 

On-Off Switch

Check if On-Off switch is lighted.

 

Temperature Control

Check that the operating temperature control is set

 

higher than the temperature of the water heater.

 

 

 

Flame Safeguard Control

Check for bad ground or bad control. Replace if

 

necessary.

 

 

 

Remote enable/disable open

Enable water heater or place jumper between

 

terminals R1-R2.

 

 

 

 

Check if fan connection terminals on flame control

 

 

is closed.

Starting or Pre-purge

Combustion Air blower

Check for 24V at field access terminal C2. Remote

Failure

 

interlock may be open.

 

 

Fan VFD may be defective. Verify proper voltage.

 

 

Check switch contacts are closed.

 

 

Check for 24V at the N.O. side of air switch.

 

Air-proving Switch

Check for 24V at the common side of air switch.

 

 

Check for proper blower pressure setting – adjust if

 

 

required. Air switch may be defective.

 

Blocked Filter Switch

Check for 24V at the N.C. side of the blocked filter

 

(if equipped)

switch. Replace filter or switch as required.

 

Flame Control Pressure Switch

Check for 24V at the pressure switch terminal.

 

Loose Wire Connections

Check connections to all components.

 

Power Supply

Check fuse and/or circuit breaker. Check voltage at

 

120/24V step-down transformer.

 

 

 

Flame Safeguard Control

Check for bad ground or bad control. Replace if

 

necessary.

 

 

 

 

Check amp draw during heat-up. Replace if amps

 

Hot Surface Igniter

greater than 3.1A. Check for overheating condition

 

 

due to damaged refractory around igniter.

Flame Failure

Air-proving Switch

Check if switch is bouncing. Adjust or replace.

Gas Pressure

Check for proper inlet static and dynamic gas

 

 

pressure.

 

 

 

Combustion

Inadequate flame signal may result from improper

 

combustion. Adjust to proper CO2 levels at low fire.

 

 

 

Grounding

Check for proper ground from flame control to

 

burner housing.

 

 

 

Safety Limits

Check all safety limits for fault condition and correct

 

as required.

 

 

33

PV500-44U 06/12

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Contents Installation & Maintenance Manual Table of Contents Troubleshooting Guide Replacement Parts Operating and Safety ControlsTemptrac Electronic Controller Panel Remote Connections Terminal StripProduct Safety Information Safety ConsiderationsBelow scalding temperatures Standard Features and Equipment Series Series Series Checking Equipment Before You Install Water Heater InstallationCodes Electrical RequirementsClearances To Combustible Surfaces Service ClearancesGeneral Piping Guidelines Inlet and Outlet ConnectionsPV500-44U 06/12 PV500-44U 06/12 Optional Condensate Neutralization System GAS Supply and Piping Inlet Pressure NAT. GASConvert Fittings to Equivalent Straight Pipe Multiple Unit Installations GAS Piping Size Chart Single Unit Installation Suggested Pipe SizeNominal Iron Length of Pipe in Straight Feet InchesCombustion and Ventilation AIR Vertical or Horizontal Remote Air Duct Termination Duct Fitting Equivalent Length Duct PipeVenting the Power VT Plus Sani models Venting the Power VT PlusVenting Vent Fitting Equivalent Length Vent Pipe Maximum Category IV Vent Length Equivalent LengthVertical or Horizontal Vent Termination Operating and Safety Controls Temperature and Pressure Relief ValvesCombining Category IV Vents High Water Temperature Limit Control Operating Temperature ControlCathodic Protection Electronic Low Water Cut-Off OptionalSET Temptrac Electronic Controller PanelDown ClockTo View The Setpoint To Change The SetpointTo Change Other Parameters Alarm Cause Results of Alarm Condition Message LED Display Alarm MessagesRecommended Action Remote Connections Terminal StripIncoming 120VAC Sequence of OperationLED Indication Fault Mode Loss of Flame SignalInitial Startup Turn-on main gas shutoff valve PVI Industries customer service for assistance Gas Train Illustration for Models 65 through Gas Train Illustration for Models 40 throughProblem Probable Cause Corrective Action Troubleshooting GuideReplacement Parts Replacement PartsControl Panel Contact factory for more information Burner Assembly Optional components may or may not be shown Contact factory for more information Burner Assembly ComponentsPeriodic Maintenance PV500-44U 06/12 Recommended Maintenance Schedule PV500-44U 06/12

PV500-44U specifications

PVI Industries is a well-established name in the manufacturing of innovative water heating solutions, and one of its standout products is the PV500-44U. This commercial water heater is specifically designed to meet the demands of medium to large-scale facilities, ensuring efficient and reliable hot water delivery.

The PV500-44U is a high-capacity, gas-fired water heater, offering a remarkable output of up to 500,000 BTU per hour. This impressive capacity makes it suitable for a variety of applications, including hospitality, healthcare, and industrial washing. With such power, it provides continuous hot water, which is vital in settings that require consistent hot water availability.

One of the key features of the PV500-44U is its robust construction. The unit is designed with high-quality stainless steel, which provides durability and resistance against corrosion. This is crucial for maintaining long-term reliability, especially in environments where water quality may vary. Additionally, the water heater utilizes a sophisticated insulation system that minimizes heat loss, ensuring that energy consumption remains efficient.

The PV500-44U incorporates advanced technologies aimed at enhancing performance and user control. It features a state-of-the-art digital control system that allows for precise temperature settings and monitoring. This system not only ensures optimal performance but also enhances safety by providing alerts for any operational anomalies.

Another notable characteristic of the PV500-44U is its eco-friendly design. It is engineered to meet the latest environmental regulations, which helps reduce carbon emissions and energy consumption. The unit’s high thermal efficiency contributes to lower operating costs, making it an economical choice for businesses looking to manage their energy expenses effectively.

In terms of maintenance, the PV500-44U offers user-friendly access to components, simplifying routine servicing and repair tasks. This thoughtfully designed structure helps extend the lifespan of the unit and minimize downtime, which is critical for maintaining hot water availability in commercial settings.

Overall, the PVI Industries PV500-44U stands out as a reliable and efficient water heating solution that effectively meets the high demands of commercial applications. Its combination of powerful output, robust construction, advanced technology, and eco-friendly features makes it a premium choice for businesses seeking quality and efficiency in their hot water systems.
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