To Next PageTo Next PageWhat does '!! LOW BATTERY !! CHECK PROG / STP / OPTN displayed' mean on my York YLPA 0115SE Heat Pump and how to fix it?
The '!! LOW BATTERY !! CHECK PROG / STP / OPTN displayed' message indicates that the RTC battery (U5) is flat. Replace U5 and reprogram setpoints, values, options, time, and schedule.
General| Model Number | YLPA 0115SE |
|---|---|
| Category | Heat Pump |
| Heating Capacity | 12.5 kW |
| Power Supply | 380-415V/3Ph/50Hz |
| Refrigerant | R410A |
| Operating Temperature Range (Cooling) | -5°C to 46°C |
| Operating Temperature Range (Heating) | -15°C to 24°C |
Overview of YORK YLPA units, their purpose, and manual content.
Johnson Controls' warranty terms for equipment and materials, including conditions.
Lists applicable industry standards, codes, and certifications for YLPA units.
Information on refrigerants, Kyoto Protocol, global warming potential, and venting.
Outlines user responsibilities for safe operation, maintenance, and equipment utilization.
Discusses suitability for intended applications and hazards of improper use.
Factory assembly, construction materials, and general design of YLPA units.
Details hermetic scroll compressors, their efficiency, and motor protection features.
Describes the two independent refrigerant circuits and their components.
Explains the refrigerant to water heat exchanger details.
Describes the IP55 cabinet housing power and control components.
Explains automatic control functions, setpoints, and displayed data.
Lists and describes optional accessories like flow switches, isolators, and breakers.
Illustrates refrigerant flow during cooling and defrost operations.
Illustrates refrigerant flow during heat pump operation.
Diagram showing the physical location of major unit components.
Explains the model number coding for YLPA units.
Precautions for unit delivery, storage, and inspection.
Guidelines for safely lifting and moving the unit.
Essential site requirements for optimal performance and service access.
Guidelines for ground-level and rooftop installation locations.
Recommendations for connecting liquid and refrigerant piping.
Suggested pipework configurations for single unit installations.
Specifies water quality parameters for the unit's liquid system.
Guidelines for piping refrigerant relief valves to the exterior.
Proper connection of unit power supply and grounding.
Details for connecting control circuits, contacts, and devices.
Pre-commissioning checks for electrical, refrigerant, and mechanical systems.
Step-by-step procedure for initial unit start-up and checks.
Explanation of control panel keys and their functions.
Displays and explains unit status messages shown on the control panel.
Lists safeties causing compressor shutdown and fault types.
Explains how to access and interpret unit operating parameters.
How to obtain printouts of system data and fault history.
Accessing and clearing stored safety shutdown information.
Lists various unit fault conditions and their display.
Displays settings like unit type, liquid type, and modes.
Navigating and changing unit configuration options.
Viewing and programming cooling/heating setpoints and ranges.
Setting and viewing cooling liquid temperature setpoints and ranges.
Setting and viewing heating liquid temperature setpoints and ranges.
Programming daily schedules, holidays, and start/stop times.
Setting cut-outs, timers, and switching points.
Recommended limits for cooling liquid setpoints and ranges.
Recommended limits for heating liquid setpoints and ranges.
Configuration of pressure, ambient, and liquid temperature cutouts.
Settings for fan stages, compressor count, and suction superheat.
Configuring the unit for local or remote control operation.
Setting the unit's primary operating mode (cooling or heating).
Configuring inputs for remote temperature setpoint resets.
Displaying and setting the unit's date, time, and calendar.
Resetting setpoints using BAS/EMS voltage or current signals.
Configuring remote signal inputs for cooling mode.
Details for configuring 0-10VDC, 2-10VDC, 0-20mA, 4-20mA signals.
Configuring remote signal inputs for heating mode.
Resetting setpoints using EMS-PWM feature and contact closures.
Adjusting cooling/heating setpoints via PWM input signals.
Configuring network communication settings for various protocols.
Explanation of BACnet object types and Modbus data points.
Table listing analog write points for BACnet/Modbus.
Table listing binary write points for BACnet/Modbus.
Unit receives data from Micro-Gateway or E-Link for remote control.
Unit transmits operational or history data based on requests.
Importance of regular maintenance for continuous operation.
Daily checks to be performed by the operator.
Routine service schedules and tasks by qualified engineers.
Inspection of the water side of the heat exchanger for corrosion.
Common issues like no display, flow switch faults, and ambient temp faults.
Troubleshooting pressure faults, compressor issues, and battery warnings.
Calibration data for various temperature sensors.
Calibration data for pressure transducers.
Graph illustrating pressure drop versus flow rate for evaporators.
Performance limits for cooling and heating modes.
Specifications like refrigerant charge, oil, dimensions, and weight.
Electrical specifications including power supply, ampacity, and fuses.
Sound power levels for different YLPA models.
Physical dimensions and connection points for the YLPA 0115 model.
Physical dimensions and connection points for the YLPA 0145 model.
Physical dimensions and connection points for the YLPA 0170 model.
Cross-reference table for 1-inch deflection spring isolators.
Details on spare parts availability and ordering.
Specifies the correct type of compressor oil for the unit.
Safe procedures for isolating, draining, and disposing of the unit.
