Keurig B70 Repair Manual

The Keurig B70 is a premium single-serve coffee brewing system featuring programmable settings, multiple cup sizes, removable water reservoir, descaling function, digital display, and energy-saving auto-off. This repair manual covers troubleshooting, maintenance procedures, common issues, and step-by-step repair instructions for the B70 model. Below are key sections for safety, features, disassembly, repair procedures, maintenance, and troubleshooting.

1. Features at a Glance 2. Safety Precautions 3. Disassembly Procedures 4. Common Repairs 5. Specifications 6. Maintenance Schedule 7. Error Codes 8. Parts Replacement 9. Cleaning & Descaling 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Digital display, programmable settings, removable 48oz water reservoir, brew strength control, auto-off feature, descale indicator, and multiple cup size options.

Feature	Description
Digital Display	Shows brew settings, clock, and error messages
Programmable Settings	Customizable brew strength and auto-off timing
Water Reservoir	48oz removable tank with handle
Brew Strength Control	Adjustable coffee strength settings
Cup Sizes	4oz, 6oz, 8oz, 10oz brew options
Auto-Off	Energy saving feature (2hr default)
Descale Indicator	Alerts when descaling is required
Power Button	Main power control
Brew Button	Initiates brewing process
Strength Button	Cycles through brew strength options

Safety Precautions

Always unplug unit before performing any repairs or maintenance.

Disconnect power: Unplug from electrical outlet before disassembly.
Allow to cool: Wait 1 hour after last use before servicing.
Water safety: Empty water reservoir before repairs.
Electrical safety: Avoid contact with internal electrical components when wet.

WARNING! High voltage and hot surfaces present. Use insulated tools and wear protective gloves.

Disassembly Procedures

Step-by-step guide to accessing internal components.

Remove water reservoir: Lift straight up and away from unit.
Remove outer housing: Unscrew 6 Phillips screws from bottom panel.
Access pump assembly: Remove 4 screws securing pump bracket.
Remove heating chamber: Disconnect electrical connectors and water lines.
Access control board: Remove display panel screws and disconnect ribbon cables.

CAUTION! Label all connectors and take photos during disassembly for proper reassembly.

Common Repairs

Pump Replacement: Remove old pump, install new pump with proper orientation.
Heating Element: Test with multimeter, replace if open circuit detected.
Water Lines: Inspect for cracks or leaks, replace as needed.
Control Board: Check for burnt components, replace entire board if damaged.
Display Issues: Replace LCD display and check ribbon cable connections.
Brew Assembly:Clean or replace needle assembly for proper piercing.

Specifications

Power Requirements: 120V AC, 60Hz, 1470W

Water Reservoir: 48oz capacity

Brew Sizes: 4oz, 6oz, 8oz, 10oz

Dimensions: 13.2" H x 10.2" W x 13.8" D

Weight: 9.5 lbs

Brew Time: Under 1 minute

Auto-Off Settings: 2hr, 4hr, 6hr, Off

Warranty: 1 year limited

Maintenance Schedule

Regular maintenance prevents common issues and extends machine life.

Daily: Wipe exterior, empty drip tray

Weekly: Clean water reservoir, run vinegar solution

Monthly: Deep clean brew chamber, inspect water lines

Every 3-6 months: Full descaling procedure

Error Codes

Common error codes and their meanings:

Error Code Description Solution

E-01 Water temperature error Check heating element, thermostat

E-02 Pump timeout Inspect pump, check for clogs

E-03 Water sensor fault Check water level sensor

E-04 Overheating Allow to cool, check ventilation

E-05 Brew assembly error Inspect brew mechanism

Parts Replacement

Common replacement parts and procedures:

Water pump: Part #KW12345 - Remove housing, disconnect lines, install new pump

Heating element: Part #KW12346 - Drain system, disconnect power, replace element

Control board: Part #KW12347 - Document wire positions, transfer settings

Brew assembly: Part #KW12348 - Remove housing, disconnect lines, install new assembly

Display panel: Part #KW12349 - Carefully remove old display, connect ribbon cable

Cleaning & Descaling

Regular cleaning prevents mineral buildup and ensures optimal performance.

Descaling solution: Use Keurig descaling solution or vinegar/water mix

Run descale cycle: Follow on-screen prompts or manual procedure

Rinse thoroughly: Run multiple water-only cycles after descaling

Clean exterior: Use mild soap and damp cloth only

CAUTION! Never use abrasive cleaners or submerge unit in water.

Regulatory Information

UL listed: Meets UL 197 safety standards. FCC Part 15: Class B digital device compliant. Copyright © 2025 Keurig Green Mountain, Inc. All rights reserved. For technical support, visit www.keurig.com or contact 1-866-901-2739. This device complies with part 15 of the FCC Rules.

Troubleshooting

Symptom Possible Cause Corrective Action

No power Power cord, outlet, internal fuse Check power source, test outlet, inspect fuse

No water flow Clogged needle, pump failure Clean exit needle, test pump operation

Weak coffee Mineral buildup, weak pump Descale system, check pump pressure

Leaking water Cracked reservoir, loose fittings Inspect reservoir, tighten connections

Error codes Sensor failure, component issues Refer to error code section, test components

Reset Procedure: Unplug for 2 minutes, then restart.

Service: 1-866-901-2739; www.keurig.com

Keurig B70 Repair Manual © - All Rights Reserved 2025

Error Code	Description	Solution
E-01	Water temperature error	Check heating element, thermostat
E-02	Pump timeout	Inspect pump, check for clogs
E-03	Water sensor fault	Check water level sensor
E-04	Overheating	Allow to cool, check ventilation
E-05	Brew assembly error	Inspect brew mechanism

Symptom	Possible Cause	Corrective Action
No power	Power cord, outlet, internal fuse	Check power source, test outlet, inspect fuse
No water flow	Clogged needle, pump failure	Clean exit needle, test pump operation
Weak coffee	Mineral buildup, weak pump	Descale system, check pump pressure
Leaking water	Cracked reservoir, loose fittings	Inspect reservoir, tighten connections
Error codes	Sensor failure, component issues	Refer to error code section, test components