Foster HR 410 - User Manual

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HR/LR 410

Economy Cabinet

with

BIT 20B11E Controller

&

LAE BIT 12 RU Display

Service Manual

Re-Issued September 2010

ISO 14001

ISO 9001

Table of Contents

Questions and Answers

H
Henry PerezAug 14, 2025
What to do if my Foster Refrigerator is not cold enough?
- P
  Paul RossAug 14, 2025
  If your Foster refrigerator's temperature isn't cold enough, start by adjusting the controller to a colder setting. Also, the condenser might be dirty, so clean it. Ensure the refrigerator isn't near stoves, sun-exposed walls, or places lacking airflow. If there's air in the system, purge and recharge it. Check the temperature control, refrigerant charge, and defrost mechanism if the evaporator coil is iced up; remove ice manually and start over. Look for any restrictions in the system and correct them. Avoid covering shelves with plastic or other materials that block cold air circulation. Finally, decrease the frequency of door openings if possible.
L
Lee StephensAug 17, 2025
Why is my Foster HR 410 Refrigerator temperature too cold?
- J
  Joel CampbellAug 17, 2025
  If the temperature in your Foster refrigerator is too cold, first adjust the controller to a warmer position and check if the compressor stops according to its operating range. Inspect the thermostat's insulation; if the problem continues, replace the thermostat. If the control contacts are stuck closed, replace the control and check the amperage load. Lastly, if the temperature control is defective or incorrect, determine the correct control and replace it.
B
Bianca HuangAug 25, 2025
Why is my Foster Refrigerator condensing unit running for long periods of time?
- B
  Brian GardnerAug 25, 2025
  If your Foster refrigerator is running for long periods, it could be due to several reasons. Avoid placing excessive amounts of warm product into the cabinet, allowing adequate time for items to cool down. Make sure that the doors are closed when not in use and avoid opening them for extended periods. Ensure door gaskets are snapped in completely; remove and wash them with soap and water, replacing if necessary. Clean the condenser coil. If the evaporator coil is iced over, unplug the unit to defrost it, ensure the thermostat isn't set too cold, and verify the door gaskets are sealing properly. You can also select manual defrost to ensure the system works.
J
John PerkinsAug 27, 2025
How to stop extreme condensation inside my Foster HR 410?
- S
  Stephanie VillarrealAug 27, 2025
  If you notice extreme condensation inside your Foster refrigerator, begin by setting the controller to a warmer position and checking if the compressor stops as it should. If the outside environment has very high relative humidity (over 75%), this issue may be due to local climatic conditions and not the unit itself. Check the door and magnetic gasket to ensure they shut completely; adjust the door hinges if needed or replace the gasket if broken. Also, ensure the refrigerator isn't placed near heat sources.
B
Bill PinedaAug 30, 2025
Why is my Foster HR 410 Refrigerator making so much noise?
- B
  Brandon EdwardsAug 31, 2025
  If your Foster refrigerator is making excessive noise, ensure it is properly leveled and check if the noise disappears after leveling. Check if the condenser is fastened correctly and that copper tubing isn't touching metal while the compressor is working; tighten the screws that fasten the condenser if needed. Inspect the evaporator and condenser fans to ensure they are securely fastened and that the fan blades are not loose, broken, or crooked; replace any faulty blades. If the noise persists after these checks, it may be originating from the compressor. Also, locate and tighten any loose parts.
T
Timothy RamirezSep 3, 2025
What to do if I get electrical shocks from my Foster HR 410 Refrigerator?
- S
  salasjessicaSep 3, 2025
  If you're experiencing electrical shocks from your Foster refrigerator, check the connections of each component to ensure they have appropriate insulation. Wires or electrical components may be in direct contact with metallic parts.
C
christopherwalkerSep 6, 2025
What causes excessive heat load in my Foster Refrigerator?
- R
  Robert RobertsSep 6, 2025
  If there's excessive heat load in your Foster refrigerator, avoid putting in products that are too hot. If condensation or ice crystals form on the suction line, the refrigerator may be overcharged with refrigerant gas; charge it with the correct amount of gas. If the refrigerant gas is leaking, find and seal the leak, replace the defective component and drier, perform a vacuum, and recharge the unit. Check electrical connections and ensure the evaporator and/or condenser fan blades aren't stuck; replace the fan motor if it doesn't work. Re-arrange the product to allow proper airflow, ensuring at least four inches of clearance from the evaporator. Finally, replace any blown fuses or reset tripped circuit breakers.
C
Christina DavisSep 10, 2025
How to fix no illumination in Foster Refrigerator glass door models?
- A
  Angela Gomez DDSSep 10, 2025
  If the illumination is not working in your Foster refrigerator (glass door models only), first, press the light switch to the “on” position. Then, inspect all connections for false contact on the light switch, the fluorescent tube, or the ballast. If the light switch, ballast, or fluorescent tube are damaged, replace the damaged component.
T
tanyawallaceNov 19, 2025
Why won't my Foster Refrigerator compressor start?
- B
  bnolanNov 20, 2025
  If the compressor of your Foster refrigerator isn't starting, several issues could be the cause. First, ensure the power cord is plugged in and the fuse hasn't blown, or the circuit breaker hasn't tripped; replace the fuse or reset the breaker if needed. Use a voltmeter to check the socket for voltage. Also, the controller may be set too high; try setting it to a lower temperature. If these aren't the problem, electrical conductors or wires may be cut (check for continuity with an ohmmeter), a component like the thermostat or relay might be defective (replace if necessary), the compressor motor could have winding issues (measure ohmic resistance), the compressor itself might be stuck (consider changing it), the temperature control contacts could be open (repair or replace them), or the wir...

Summary

Controller Operation

Controller Settings

BIT 20 B 11 E Controller Settings for 410 Models

Electrical Connections

Parts Replacement: Access and Evaporator Fan

2) Evaporator Fan Replacement HR410

Parts Replacement: Air Probe, Compressor Fan, Controller Display, Controller

3) Air Probe Replacement HR410

4) Compressor Fan Replacement

5) Controller Display Replacement

6) Controller Replacement

Parts Replacement: Door Lock, Compressor, Condenser, Door

8) Compressor Replacement

Guide for replacing the compressor, including refrigerant handling and brazing.

9) Condenser Replacement

Procedure for replacing the condenser, covering refrigerant and brazing techniques.

Parts Replacement: Hinge Conversion & Gasket

High Temperature Controller Wiring Diagram

Low Temperature Controller Wiring Diagram

Troubleshooting: Compressor and Temperature Issues

Compressor Will Not Start

Diagnosing and resolving problems related to the compressor not starting.

The Temperature Is Too Cold

Addressing issues where the temperature inside the cabinet is excessively cold.

The Temperature Is Not Cold Enough

Troubleshooting insufficient cooling and failure to reach the desired temperature.

Troubleshooting: Refrigerant, Fans, Electrical, Noise, Condensation

Excessive Heat Load and Refrigerant Issues

Resolving problems related to heat load, overcharged refrigerant, and leaks.

Fan and Airflow Problems

Electrical Shocks and Noise

Troubleshooting: Door Seals and Condensing Unit

Door Seal and Condensing Unit Operation

Summary

Controller Operation

Controller Settings

BIT 20 B 11 E Controller Settings for 410 Models

Electrical Connections

Parts Replacement: Access and Evaporator Fan

2) Evaporator Fan Replacement HR410

Parts Replacement: Air Probe, Compressor Fan, Controller Display, Controller

3) Air Probe Replacement HR410

4) Compressor Fan Replacement

5) Controller Display Replacement

6) Controller Replacement

Parts Replacement: Door Lock, Compressor, Condenser, Door

8) Compressor Replacement

Guide for replacing the compressor, including refrigerant handling and brazing.

9) Condenser Replacement

Procedure for replacing the condenser, covering refrigerant and brazing techniques.

Parts Replacement: Hinge Conversion & Gasket

High Temperature Controller Wiring Diagram

Low Temperature Controller Wiring Diagram

Troubleshooting: Compressor and Temperature Issues

Compressor Will Not Start

Diagnosing and resolving problems related to the compressor not starting.

The Temperature Is Too Cold

Addressing issues where the temperature inside the cabinet is excessively cold.

The Temperature Is Not Cold Enough

Troubleshooting insufficient cooling and failure to reach the desired temperature.

Troubleshooting: Refrigerant, Fans, Electrical, Noise, Condensation

Excessive Heat Load and Refrigerant Issues

Resolving problems related to heat load, overcharged refrigerant, and leaks.

Fan and Airflow Problems

Electrical Shocks and Noise

Troubleshooting: Door Seals and Condensing Unit

Door Seal and Condensing Unit Operation

Foster HR 410 Specifications

General

Brand	Foster
Model	HR 410
Category	Refrigerator
Language	English

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