Heat Pump Water Heater
1
Table of Contents
INTRODUCTION ............................................................................................................................... 3
SAFETY ............................................................................................................................................ 3
Electrical ..................................................................................................................................... 3
R410a Refrigerant ....................................................................................................................... 3
Scalding....................................................................................................................................... 3
Flammable Vapors ...................................................................................................................... 3
COMPONENT PARTS OF THE HEAT PUMP WATER HEATER ......................................................... 4
TOOLS ........................................................................................................................................... 10
OPERATIONAL MODES ................................................................................................................. 11
Energy Saver Mode ................................................................................................................... 11
Normal Mode ............................................................................................................................ 11
Electric Heat Only..................................................................................................................... 11
Temperature Settings ................................................................................................................ 11
WATER PUMP FLOW RATES ........................................................................................................ 12
EVAPORATOR FAN SPEED ............................................................................................................ 12
OPERATIONAL SAFETY CONTROLS – ALL MODES ...................................................................... 12
SEQUENCE OF OPERATIONS ......................................................................................................... 13
Energy Saver Mode ................................................................................................................... 13
Normal Mode ............................................................................................................................ 14
Electrical Heat Only Mode ....................................................................................................... 15
SAFETY FUNCTIONS OF THE CONTROLS ...................................................................................... 16
ECO (Energy Cut Off) .............................................................................................................. 16
Power Outages .......................................................................................................................... 16
Heat Pump and Compressor Operations ................................................................................... 16
TROUBLESHOOTING ..................................................................................................................... 16
Error Code LED Light .............................................................................................................. 16
Troubleshooting the Heat Pump Components .......................................................................... 17
TROUBLESHOOTING COMPONENT PARTS ................................................................................... 18
Upper or Lower Heating Elements ........................................................................................... 18
Capacitor ................................................................................................................................... 18
Transformer ............................................................................................................................... 18
Thermistors (ambient, suction, discharge, water out, evaporator, upper tank and lower tank) 19
Fan Assembly............................................................................................................................ 19
Water Pump .............................................................................................................................. 19
Circuit Board ............................................................................................................................. 20
Relay Switch ............................................................................................................................. 20
DISASSEMBLY AND REPAIR .......................................................................................................... 21
Upper or Lower Heating Elements ........................................................................................... 21
Upper ECO & Thermistor or Lower Thermistor ...................................................................... 21
Capacitor ................................................................................................................................... 22
Relays ........................................................................................................................................ 22
Transformer ............................................................................................................................... 22
Thermistors (ambient, suction, discharge, water out, evaporator, upper tank and lower tank) 22
Fan Assembly............................................................................................................................ 23