Home Appliances / Refrigerators
Danfoss 077B7001 Service Thermostats User Guide
Quick guide for Danfoss Service Thermostats, including application selection, ordering conversion tables, and installation compatibility for refrigeration and freezing appliances.
Table of contents
Quick guide from the manual
This document provides essential information for selecting and installing Danfoss Service Thermostats across various refrigeration and freezing appliances. The system is designed to simplify servicing by using eight standardized kits that cover most common applications, eliminating the need for extensive spare parts catalogs.
Device Overview
The Danfoss Service Thermostats are designed for universal application in refrigeration and freezing systems. Each service kit includes the thermostat, capillary tube, mounting bracket, knob, and necessary mounting accessories. These thermostats feature a wider regulating range than standard models and include differentials that ensure sufficient compressor standstill to prevent damage.
Application and Selection
The thermostats are categorized into eight specific kits based on the appliance type:
- Kit 1: Refrigerators
- Kit 2: Refrigerators with push-button defrost
- Kit 3: Refrigerators with automatic defrost
- Kit 4: Absorption refrigerators
- Kit 5: Ice-cream cabinets and freezers without signal
- Kit 6: Freezers with active signal
- Kit 7: Freezers with passive signal
- Kit 8: Bottle and liquid coolers
Safety and Compatibility
Specific models (077B….EBD and 077B….L EBD) are compatible with systems using R290 and R600a flammable refrigerants. In countries where safety standards are not mandatory, it is recommended to obtain third-party approval for systems containing these flammable refrigerants.
Technical Data and Conversion
The manual provides a detailed ordering and conversion table. This table lists the cut-in/cut-out temperatures for both warm and cold positions, capillary tube lengths, and cross-references for various manufacturers including Atea, General Electric, Ranco, Robertshaw, Matsushita, Saginomiya, and Pacific Controls.
Manufacturer information
Danfoss A/S
Practical help
Common problems
Compressor damage due to frequent cycling
Danfoss Service Thermostats are designed with specific differentials to ensure sufficient standstill time for the compressor.
Compatibility with flammable refrigerants
Only models marked 077B….EBD or 077B….L EBD are suitable for systems using R290 and R600a. Ensure third-party approval if required by local safety standards.
Before use
- Identify the appliance type (e.g., refrigerator, freezer, bottle cooler).
- Check if the appliance requires specific features like automatic defrost, push-button defrost, or signal outputs.
- Verify the required capillary tube length against the selected kit specifications.
- Consult the conversion table to match the original thermostat brand and model with the correct Danfoss kit number (1-8).
- Ensure all mounting accessories included in the kit are present before starting installation.
Specs in practice
- Cut-in/Cut-out
- The temperature range at which the thermostat activates (cut-in) and deactivates (cut-out) the cooling cycle.
- Capillary tube length
- The length of the sensor tube that must be correctly positioned within the appliance for accurate temperature sensing.
Images and diagrams
- The manual provides diagrams for each of the 8 kits, showing the temperature cut-in/cut-out points for both 'Warm' and 'Cold' settings.
- Wiring diagrams are included in the physical service kits to assist with electrical connections.
Model compatibility
- The 8 kits are designed to be universal and independent of the original thermostat manufacturer.
- Cross-reference tables allow replacement of Atea, GE, Ranco, Robertshaw, Matsushita, Saginomiya, and Pacific Controls models.
Manual page author
Michael Turner
Technical manual editor
Reviews PDF manuals for structure, safety notes, and practical product details so readers can find the right information quickly.