ECO2 Systems SANCO2 SAN-83SSAQA - User Manual

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SANCO

2

Heat Pump – Owner’s Manual

Page 1 of 28

Sanden Heat Pump – Installation Manual

Page 1 of 40

.

Page title

Covering model numbers for residence

Heat Pump Unit GS3-45HPA-US



This appliance is not to be installed by unqualified and unlicensed persons,

please read and understand this manual prior to installing and operating the unit.

※This manual is for TO BE USED

by the installing Contractor

only.

20916700 (K)

Sanden Heat Pump – Owner’s Manual

Page 1 of 24

Page title

Covering model numbers for residence

Heat Pump Unit GS3-45HPA-US



This appliance is not to be installed by unqualified and

unlicensed persons, please read and understand this manual

prior to installing and operating the unit.

OOwwnneerr’’ss mmaannuuaall

Owner’s Manual

SANCO

2

Heat Pump Water Heater with Natural Refrigerant(CO

2

)

Heat Pump Unit

Tanks

: GS4-45HPC

: SAN-43SSAQA

SAN-83SSAQA

SAN-119GLBK

Table of Contents

Other manuals for ECO2 Systems SANCO2 SAN-83SSAQA

Installation Manual44 pages

Questions and Answers

H
hocarlAug 9, 2025
Why is there no hot water coming out of my ECO2 Systems Water Heater tap?
- D
  Donald OdonnellAug 10, 2025
  If no hot water is coming from your ECO2 Systems Water Heater tap, it could be due to a low water temperature. Try stopping hot water usage and wait for about 1 hour. Other potential causes include issues with the electricity supply's off-peak mode, blockages in the filter, piping bends or crushes, frozen pipes, a closed valve, or obstructions blocking airflow through the evaporator. Make sure to check these components and resolve any identified issues.
K
Katie BrownNov 18, 2025
What to do if no hot water comes out of my ECO2 Systems Water Heater tap?
- X
  xmitchellNov 18, 2025
  If you're not getting any hot water from your ECO2 Systems Water Heater, several factors could be the cause. First, the storage tank might be low or empty. Try waiting about an hour after stopping hot water usage to see if it replenishes. Also, consider switching your electricity supply to off-peak mode, as the power supply hours may be too short for adequate water heating. Another potential issue is air trapped in the heat pump system; you can remove this by opening the water drain plugs on the Heat Pump Unit, being careful of burns. A blocked filter on the cold inlet connector could also be the culprit—check and clear any blockages. Additionally, inspect the piping for bends, blockages, or crushes that may be restricting water flow. If pipes are frozen, melt the ice and provide heat insu...
B
Bryan HillDec 1, 2025
What to do if my ECO2 Systems Water Heater has no hot water?
- C
  Christine TranDec 1, 2025
  If no hot water is coming from your ECO2 Systems Water Heater, several factors could be the cause. First, the storage tank might be depleted; stop using hot water and wait about an hour. Second, there might be insufficient air removal from the heat pump system; open the water drain plugs on the Heat Pump Unit to remove air, being cautious of burns. Third, the filter on the cold inlet connector could be blocked; inspect and clear any blockages. Fourth, the water flow speed might be reduced due to piping issues; check for bends or crushes in the piping. Fifth, frozen pipes could be the issue; melt any ice on the pipes and insulate them. Sixth, a closed stop valve could be the culprit; ensure the valve is open. Finally, insufficient air absorption due to evaporator blockage could be the probl...

Summary

General Safety Precautions

Danger: Scalding Hazard

Hot water over 125°F can cause severe burns; children, disabled, elderly are at highest risk.

Warning: Critical Safety Information

Post-Damage Operation Warning

Do not operate after fire, flood, or damage until checked by a qualified technician.

Hydrogen Gas Hazard

Hydrogen gas can form in unused tanks; it is flammable and dangerous.

Touch Safety Warnings

Warning: Operational Safety Guidelines

Electrical and Piping Safety

Use correct power cords and ensure piping insulation to prevent hazards.

Flammable Substances and Disassembly

Keep away from flammables; do not disassemble unit to prevent fire or shock.

Unit Access and Moving Parts

Do not open unit covers or insert objects into air inlets/outlets.

Caution: Usage and Environmental Considerations

Installation Details and Requirements

Mandatory Tempering Device

Installation of a temperature tempering device is MANDATORY to avoid scalds.

Troubleshooting Common Issues

No Hot Water or Low Temperature

Addresses issues like insufficient hot water, air bleeding, blocked filter, or frozen pipes.

Power Interruption Caution

Understanding Error Codes

Common Error Code Explanations

Details error codes related to temperature sensors, pressure, compressor, pump, and PCB failures.

Filling the System and Bleeding Air

Air Bleeding Procedure Steps

Mains Power and Electrical Installation

Electrical Connection Requirements

Connecting Main Power Supply

Power Wiring Diagram and Steps

Connecting the Thermistor Cable

Water Supply Quality Considerations

Heat Pump Unit Specifications

Residential Warranty Policy Overview

Heat Pump and Tank Warranty Periods

Covers 3-year parts & labor, plus 7-year parts for heat pump; 10-15 years for tanks.

Combined DHW;Heating Application Warranty

General Warranty Conditions for Residential Use

Installation and Verification Requirements

Warranty Exclusions - Core Issues

Damage, Misuse & Unauthorized Repairs

Water Pressure & Plumbing Issues

Component & Environmental Exclusions

Warranty Exclusions - Further Conditions

Installation Location & Water Quality

Exhibit A: Labor Costs for Service

Warranty Registration Process

ECO2 Systems SANCO2 SAN-83SSAQA Specifications

General

Category	Water Heater
Manufacturer	ECO2 Systems
Model	SANCO2 SAN-83SSAQA
Tank Volume	83 gallons
Fuel Type	Electric
Warranty	10 years

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