Danfoss FR10B 103U2954 Compressor
Danfoss FR10B 103U2954 Compressor: Technical Identification, Application Range, and Performance Data
Most references that detail this model (FR10B, code 103U2954) explicitly describe it as a “FR10B HST 1/4 HP” or note power range information confirming the quarter‑horsepower classification.
The Danfoss FR10B with code 103U2954 is a light commercial hermetic reciprocating compressor designed for low‑back‑pressure refrigeration on 220–240 V, 50/60 Hz power supplies. It is widely used in commercial refrigerators and freezers and is part of the Danfoss/SECOP FR series known for compact design and reliable operation in R12 and later R134a applications.
Nameplate decoding: FR10B 103U2954
The yellow identification label on this compressor summarizes its key application and electrical data in a compact format. Understanding every line of that label is essential for correct replacement, troubleshooting, or system redesign.
Nameplate information table
Technical specifications and operating envelope
The FR10 family has been documented in several universal catalogs, which provide detailed operating conditions for R12 and later R134a refrigerants. The FR10B 103U2954 follows the same mechanical platform and performance class as the FR10G universal compressor.
Main technical data (FR10 series, R134a/R12 class)
Performance snapshot at typical freezer conditions
These figures are indicative and should always be cross‑checked with the exact data sheet for the specific refrigerant and code number when designing or verifying a system.
Application in commercial refrigeration
The FR10B 103U2954 compressor is typically installed in small commercial cold rooms, display freezers, under‑counter cabinets and chest freezers where compact dimensions and dependable low‑temperature performance are critical. Its evaporating temperature range down to about −30 °C makes it suitable for frozen food storage and ice‑cream applications.
Typical systems using FR10B
- Glass‑door upright freezers in supermarkets and convenience stores.
- Compact chest freezers and island cabinets for frozen food.
- Under‑counter commercial refrigerators where LBP/HBP dual range is required.
Advantages for installers and OEMs
Service notes, replacement options and energy considerations
Over time, FR10B compressors in the field often need replacement because of mechanical wear, electrical failures or refrigerant conversion projects. When selecting a replacement, technicians frequently upgrade to modern FR10G or FR10GX R134a versions that offer similar footprint but better efficiency and environmental performance.
Replacement and retrofit guidance
- Match application range and refrigerant
- For original R12 systems, many retrofit projects convert to R134a with corresponding FR10G/FR10GX models, observing manufacturer guidelines for oil type and charge.
- System components such as capillary tubes and filters must be recalculated for the new refrigerant to maintain correct superheat and capacity.
- Preserve electrical compatibility
- Optimize energy efficiency
- Danfoss high‑efficiency light commercial compressors can cut appliance energy consumption by 10–30% compared with older standard models, which is especially relevant in 24/7 commercial refrigeration.
- When installing a replacement, technicians should verify condenser cleanliness, airflow, and thermostat settings to fully benefit from improved compressor performance.
