Bosch HPC User Manual

Heat Pump Controller
Heat Pump Controller8733819577 (2019/02) Subject to change without prior notice
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CONTENTS
Document Conventions .......................................................3
Key to Symbols............................................................ 3
Safety Warnings..................................................................3
Introduction........................................................................4
Product Description..................................................... 4
Bosch EasyStart App.................................................... 5
Features..................................................................... 5
Specifications ............................................................. 5
Loop Pump Control (former Pump Valve Relay Kit) ........... 6
Unit Configuration...............................................................7
Settings ..................................................................... 7
Alarm Mode ................................................................ 7
Configurable Hard Lockout............................................ 8
Fan Motor................................................................... 8
System Operation ...............................................................9
Timers and Faults ........................................................ 9
Sequence of Operation................................................. 9
Fan Operation ........................................................... 10
Loop Pump Operation ................................................ 10
Reversing Valve Operation .......................................... 11
Comfort Mode........................................................... 11
Economy Mode.......................................................... 11
Emergency Heating Mode ........................................... 11
Heat Recovery Package (HRP) ..................................... 11
Dehumidification ....................................................... 12
Latching Mode Operation............................................12
Unlatching Mode (Factory Default)............................... 12
System Protection.............................................................13
Consumer Enhanced Security...................................... 13
Compressor Demand (Y1 Call) .................................... 13
Pressure Protection ................................................... 13
Brownout Protection.................................................. 14
Low Loop Water Protection Control (LLWPC) (Boilerless
Control) ................................................................... 14
Water Flow Detection................................................. 14
Sensor Monitoring .....................................................14
Troubleshooting................................................................19
Invalid Thermostat Demands ....................................... 19
Replacement Parts.....................................................19
Unit Status LED (Blink Code) Information...................... 20
Heating and Cooling ................................................... 20
Heartbeat LED........................................................... 22
Thermistor Resistance Versus Temperature................... 22
HPC Board Replacement and Installation ............................24
Contact Information ................................................... 24
Recommended Tools.................................................. 24
Model and Serial Number............................................ 24
HPC Board Replacement............................................. 24
Wiring Diagrams ...............................................................30
Electrical Box....................................................................32
Thermostat Connections....................................................33
Alarm Terminal Wiring ...................................................... 33
Terminology ..................................................................... 34
Acronyms .................................................................34
Terms.......................................................................34
Decommissioning Information ........................................... 35
Check-Out Sheet............................................................... 36
EasyStart Check-Out Sheet................................................ 37
Notes ............................................................................... 38

Bosch HPC Specifications

General

Brand	Bosch
Model	HPC
Category	Controller
Language	English