Galletti MPE - User Manual

Questions and Answers

D
Douglas LopezAug 21, 2025
What to do if Galletti Heat Pump compressor does not start?
- O
  ovanceAug 21, 2025
  If the Galletti Heat Pump compressor isn't starting, it could be due to a few reasons. The compressor might be burnt out or seized, requiring replacement. Another cause could be a deenergized compressor contactor, so check the voltage at both ends of the compressor contactor coil and confirm the coil's continuity. Also, a power circuit could be open, so locate what tripped the protection and check for short circuits in the wiring or windings of the pump, fan, compressor motors, or the transformer. The compressor may have operated in critical conditions or there is insufficient refrigerant within the circuit: check the working conditions and make sure they fall within the operating limits. If there is a refrigerant leak, refer to item G.
D
Damon Moore MDAug 23, 2025
What to do if Galletti MPE Heat Pump compressor starts and stops repeatedly?
- C
  catherinemitchellAug 23, 2025
  If the Galletti Heat Pump's compressor starts and stops repeatedly, it could be due to a tripped minimum pressure switch, a defective compressor contactor (check and replace if necessary), a wrong set-point or differential setting (change them according to the indications given in the tables), or a lack of refrigerant (refer to item G).
B
Belinda FieldsAug 26, 2025
What to do if Galletti Heat Pump compressor does not start because the maximum pressure switch has tripped?
- E
  Emily WhiteAug 26, 2025
  If the Galletti Heat Pump compressor doesn't start because the maximum pressure switch has tripped, it might be due to a pressure switch failure (check and replace), an excessive refrigerant charge (discharge the excess gas), a finned coil obstruction causing insufficient airflow (remove dirt from the coil and any obstacles to airflow), or a non-working fan (refer to item F).
P
Peter MartinAug 28, 2025
Why Galletti MPE fans do not start?
- J
  Jesus LyonsAug 28, 2025
  The Galletti Heat Pump fans might not start due to a deenergized fan contactor, no power output from the fan speed control card, the fan’s internal thermal protection having tripped, a defective fan motor, or loose electrical connections.
L
Laura FullerAug 31, 2025
What causes Galletti MPE Heat Pump to work continuously without ever stopping?
- S
  Samuel KelleyAug 31, 2025
  The Galletti Heat Pump might run continuously due to a lack of refrigerant gas, a wrong setting of the operating thermostat, thermal overload, the compressor not providing the rated heating capacity, or a clogged liquid filter.
M
Mark GrossSep 2, 2025
Why Galletti MPE Heat Pump has frost in the compressor intake pipe?
- C
  Chelsea JohnsonSep 2, 2025
  The Galletti Heat Pump may have frost in the compressor intake pipe due to an improperly working expansion valve, a blocked water circulation pump, a defective water circulation pump, a low level of refrigerant, or a clogged liquid filter.
V
vgarnerSep 5, 2025
What causes Galletti Heat Pump to have lack of gas?
- N
  Natasha ChaneySep 5, 2025
  A cooling circuit leak is the cause of lack of gas in Galletti Heat Pump.
K
Kelly SteeleSep 7, 2025
Why Galletti Heat Pump is not defrosting?
- P
  patricia43Sep 7, 2025
  The defrosting cycle on the Galletti Heat Pump might not activate because the 4-way cycle reversing valve is defective, or the defrost thermostat has broken down or has been set incorrectly.
M
melissa10Sep 9, 2025
What causes Galletti Heat Pump to have frost in liquid pipe downstream from a filter?
- M
  Michael AllisonSep 9, 2025
  A clogged liquid filter can cause frost in the liquid pipe downstream from a filter in the Galletti Heat Pump.
A
Andrea CarlsonSep 12, 2025
What causes Galletti MPE Heat Pump to work regularly but with an insufficient capacity?
- E
  Emma DeanSep 12, 2025
  The Galletti Heat Pump might work regularly but with insufficient capacity due to a low level of refrigerant or a defective 4-way cycle reversing valve.

Summary

TRANSLATION BY ORIGINAL INSTRUCTIONS

GENERAL CAUTIONARY NOTES

SAFETY SYMBOLS

Provides guidance on safety symbols and their meanings for safe operation.

THE MPE SERIES

FIELD OF APPLICATION

Details the intended use and installation locations for MPE units.

MAIN FEATURES

Highlights the key characteristics and benefits of the MPE series.

MODELS AND VERSIONS

Lists the different models and available configuration options for the MPE series.

CONSTRUCTIVE FEATURES

STRUCTURE

Describes the physical construction and materials of the unit's chassis.

CUSTOMISED HYDRAULIC KIT

Details the components and features of the optional hydraulic kit.

COOLING CIRCUIT

Explains the configuration and components of the unit's cooling circuit.

FINNED BLOCK HEAT EXCHANGER

Describes the design and specifications of the air-to-water heat exchanger.

ELECTRONIC MICROPROCESSOR CONTROL

Details the unit's electronic control system and interface.

ELECTRIC CONTROL BOARD

Explains the construction and compliance of the electrical control board.

OPTIONS

Lists various optional features and accessories available for the unit.

FAN DRIVE ASSEMBLY

Describes the fan motor, axial fan, and housing design for optimal ventilation.

INSPECTION, CONVEYANCE, DIMENSIONAL AND SITING

INSPECTION

Instructions for checking the unit upon receipt for damage and completeness.

CONVEYANCE

Guidance on safe handling, lifting, and transportation of the unit.

SITING AND DAMPERS

Key considerations for selecting the installation site and using vibration damping.

INSTALLATION CLEARANCE REQUIREMENTS

Specifies minimum clearances needed for proper unit operation and maintenance.

DIMENSIONS

Provides detailed dimensional drawings and specifications for various unit models.

TECHNICAL FEATURES

MPE C WATER CHILLERS RATED TECHNICAL DATA

Presents detailed performance and specification data for MPE C water chillers.

MPE H HEAT PUMPS RATED TECHNICAL DATA

Provides detailed performance and specification data for MPE H heat pumps.

MICROPROCESSOR CONTROL

USER INTERFACE

Describes the control panel, display, and indicators for unit operation.

KEYS FUNCTIONS

Details the functions associated with each button on the control panel.

PROGRAMMING BY KEY

Explains how to access and modify unit parameters using the control panel keys.

HOW TO CHANGING A PARAMETER VALUE

Step-by-step guide for modifying parameter values via the control panel.

SWITCHING ON THE UNIT IN CHILLER - HEAT PUMP MODE

Instructions for starting the unit in different operating modes.

HOW TO SET THE UNIT STAND-BY

Explains how to put the unit into standby mode and its implications.

THE FUNCTION MENU (KEY MENU)

Details how to navigate and use the unit's function menu.

OTHER FUNCTIONS AVAILABLE BY KEY

Covers additional functions accessible through the control panel keys.

NO POWER OUTPUT

Provides guidance on actions to take after a power interruption.

PARAMETERS AND ALARMS LIST

Refers to the manual for a comprehensive list of parameters and alarms.

START-UP

PRELIMINARY CHECKS

Essential checks to perform before the initial start-up of the unit.

PLUMBING AND ELECTRICAL CONNECTIONS

PLUMBING CONNECTION

Guidelines and requirements for connecting the unit's water circuits.

Requirements for the heat transfer fluid and maintenance of the system

Specifies fluid requirements and system maintenance for optimal operation.

ELECTRICAL CONNECTIONS

Details the procedures and safety measures for electrical wiring.

ELECTRICAL DATA

Provides crucial electrical specifications and ratings for unit installation.

WATER CIRCUIT

Illustrates the water circuit diagrams and component functions.

OPERATING LIMITS

OPERATING LIMITS IN CHILLER MODE

Graphical representation of operating limits for the unit in chiller mode.

OPERATING LIMITS IN HEAT PUMP MODE

Graphical representation of operating limits for the unit in heat pump mode.

THERMAL CARRYING FLUID

Information on suitable thermal fluids and their concentration limits.

CONTROL AND SAFETY DEVICES

CONTROL DEVICES

Explains the function of thermostats and other control elements.

SAFETY DEVICES

Details the various safety mechanisms and their operational principles.

ROUTINE MAINTENANCE AND CHECKS

CHECKS TO BE PERFORMED BY THE USER

Routine checks that can be performed by the unit operator.

CHECKS AND MAINTENANCE TO BE PERFORMED BY SPECIALISED PERSONNEL

Maintenance tasks requiring qualified technicians and specific procedures.

TROUBLESHOOTING

RETIRING THE UNIT

Galletti MPE Specifications

General

Brand	Galletti
Model	MPE
Category	Heat Pump
Language	English

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