Lochinvar Boiler Manual, Crest Service Manual & Fan Speed Lockout Troubleshooting

Page 45

 

 

 

 

 

Service Manual

 

3

Troubleshooting (continued)

 

 

 

 

 

 

 

Table 3G (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Boiler Interface

 

 

 

 

 

 

 

 

FAULT

DESCRIPTION

 

CORRECTIVE ACTION

 

 

 

 

 

 

 

 

 

 

• Vent/air intake lengths exceed the maximum allowed

 

 

 

 

lengths. Refer to Section 2 - General Venting of the

Fan Speed Low 1

 

 

Crest Installation and Operation Manual

for

 

 

proper lengths.

 

 

(will require a manual

The actual fan 1 RPM is 30% lower than

• Check for obstruction or blockage in the vent/air

reset once the condition

what is being called for.

intake pipes or at terminations.

 

has been corrected. Press

 

 

• Check the wiring connections at fan 1 and at

the

the RESET button on the

 

 

 

 

main control board.

 

SMART TOUCH display

 

 

 

 

 

• Replace the fan.

 

 

to reset.)

 

 

 

 

 

 

 

 

 

 

Blown fuse.

• Replace fuse F2 on the control board, see page 36

 

 

of this manual.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Vent/air intake lengths exceed the maximum allowed

 

 

 

 

lengths. Refer to Section 2 - General Venting of the

 

 

 

 

Crest Installation and Operation Manual

for

Fan Speed Low 2

 

 

proper lengths.

 

 

(will require a manual

The actual fan 2 RPM is 30% lower than

• Check for obstruction or blockage in the vent/air

reset once the condition

what is being called for.

intake pipes or at terminations.

 

has been corrected. Press

 

 

• Check the wiring connections at fan 2 and at

the

the RESET button on the

 

 

 

 

main control board.

 

SMART TOUCH display

 

 

 

 

 

• Replace the fan.

 

 

to reset.)

 

 

 

 

 

 

 

 

 

 

Blown fuse.

• Replace fuse F2 on the control board, see page 36

 

 

of this manual.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Vent/air intake lengths exceed the maximum allowed

Fan Speed High 1

 

 

lengths. Refer to Section 2 - General Venting of the

 

 

Crest Installation and Operation Manual

for

 

(will require a manual

 

 

proper lengths.

 

reset once the condition

The actual fan 1 RPM is 30% higher than

• Check for obstruction or blockage in the vent/air

has been corrected. Press

what is being called for.

intake pipes or at terminations.

 

the RESET button on the

• Check the wiring connections at the fan and at the

SMART TOUCH display

 

 

 

 

main control board.

 

 

to reset.)

 

 

 

 

 

 

 

 

 

 

 

 

 

• Replace the fan.

 

 

 

 

 

 

 

 

 

 

• Vent/air intake lengths exceed the maximum allowed

Fan Speed High 2

 

 

lengths. Refer to Section 2 - General Venting of the

 

 

Crest Installation and Operation Manual

for

 

(will require a manual

 

 

proper lengths.

 

reset once the condition

The actual fan 2 RPM is 30% higher than

• Check for obstruction or blockage in the vent/air

has been corrected. Press

what is being called for.

intake pipes or at terminations.

 

the RESET button on the

• Check the wiring connections at the fan and at the

SMART TOUCH display

 

 

 

 

main control board.

 

 

to reset.)

 

 

 

 

 

 

 

 

 

 

 

 

 

• Replace the fan.

 

 

 

 

 

 

 

 

45

Image 45
Contents Models 1.5 2.0 2.5 3.0 Contents Please read before proceeding Handling ceramic fiber materialsNiosh stated First Aid When servicing boiler Service What is in this manual?Maintenance TroubleshootingBoiler piping ServiceHome Screen Control inputs Smart Control ModuleStrip Control outputsGeneral Operation Access modesHow the boiler operates How the control modules operateTo adjust and save parameters reference FIG Sequence of operation Value Access Sub Parameter Name See Min Max Default User InstallerParameter table MenuDelay Ramp BMS Setup Setback HWG Night Pumps Initial Setup Viewable and changeable control parametersSet Points Outdoor Reset Ramp Delay Advanced Setup SH/HWG Night Setback Cascade ModBusCascade Offset Minimum On/Off TimePumps Service Notification in Months Service NotificationService Notification Running Hours Service Notification Cycles8Cascade Screen Service Cascade Screen9Graph ScreenParameter Selection Graph Screen11History ScreenLockout Faults Service History Screen13History ScreenRuntime History 14Service Screen Service ScreenService technician Maintenance Maintenance and annual startupOwner maintenance See the Crest User’s Information Manual for InstructionsMaintenance Check water system Flue vent system and air pipingCheck expansion tank Check boiler relief valveCheck all boiler wiring Check ignition ground wiringCheck control settings Check flame signalReview with owner Cleaning boiler heat exchangerBefore troubleshooting TroubleshootingCheck the following Check control module fusesTroubleshooting Checking temperature sensors No Pump Cutoff Open Low WaterAnti-cycling Flame FailureIgnition Flame Out Sequence Flame OutRunning Unit was running and lost the flame Gas Valve / Relay FailureManual Reset Auto ResetHigh Limit High Limit OpenFault Description Corrective Action Flue Temp High Louver Proving Sw OpenDelta T High Outlet TempOutlet Temp High Service BlkRem Ctrl Flt Parameters SavedSensor Open Switch OpenSensor Shorted Flue SensorTemperature Burner SupplyDifferential Internal Fault Resets Try LaterToo Many Writing toNo Error Stored Watch Dog ErrorWrite EEProm CRC ParametersGas Valve Adjustment Combustion Analysis ProcedureOr Obstruction Gas Supply Pressure2Gas Valve Adjustment Models 1.5 Gas valve adjustment procedurePage
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3, 2, 3.5, 2.5, 1.5 specifications

Lochinvar is a leader in manufacturing high-efficiency water heating solutions, and their Lochinvar 1.5, 1.3, and 1.0 models exemplify the company's commitment to innovation and performance. These advanced heating systems are designed to meet the diverse needs of commercial and residential applications, providing reliable hot water while ensuring energy efficiency and environmental sustainability.

The Lochinvar 1.5, 1.3, and 1.0 models incorporate cutting-edge technologies that set them apart from traditional water heaters. One of the most notable features is their use of high-efficiency condensing technology, which extracts maximum heat from the combustion process. This process allows the units to achieve high thermal efficiencies, often exceeding 95%, which not only reduces energy costs but also lowers greenhouse gas emissions.

In terms of design, Lochinvar's models are constructed with durable materials, ensuring longevity and reliability in demanding environments. The stainless steel heat exchanger is a key element that contributes to the durability and performance of the units. This material is resistant to corrosion and scale build-up, enhancing the lifespan of the heater and reducing maintenance requirements.

The Lochinvar 1.5, 1.3, and 1.0 models feature advanced control systems that provide precise temperature management and easy operation. The intuitive digital display allows users to monitor performance metrics, temperature settings, and energy consumption with ease. Additionally, these units are equipped with intelligent modulating gas valves that optimize fuel usage based on demand, ensuring efficient operation across various load conditions.

Safety is a priority in the design of Lochinvar's water heaters. The models come with built-in safety features, including flame failure detection, overheat protection, and venting safeguards. These systems work together to ensure the safe operation of the units, giving users peace of mind.

Another characteristic that makes the Lochinvar 1.5, 1.3, and 1.0 models popular among users is their compact design. These units are engineered to fit in tight spaces, making them ideal for installations where space is at a premium. Despite their small footprint, they deliver powerful performance, ensuring that users have access to the hot water they need.

In summary, Lochinvar's 1.5, 1.3, and 1.0 water heating models represent the pinnacle of efficiency, safety, and reliability. With their advanced technologies, durable construction, and user-friendly features, these units are an excellent choice for anyone seeking a high-performance water heating solution.