Brand: SANYO
Category: Commercial Solutions
Document Type: Parts/Service
Language: EN
Parts/Service for MDF-193(N)
Uploaded: Nov. 21, 2025, 6:39 p.m.
Warranty Information
This manual is for service purposes and does not contain warranty information.
Basic Operation:
This manual details the service procedures for the SANYO Ultra-Low Temperature Freezer, models MDF-193 and MDF-192(N). It covers structural, control, and performance specifications, dimensions, cooling unit parts, refrigeration circuit diagrams, PCB components, electrical connections, wiring diagrams, circuit schematics, electric parts lists, sensor specifications, control functions, test data (pull-down, pull-up, pressure, current, power consumption, temperature uniformity), and troubleshooting.
Key operational aspects include temperature control settings (-50°C to -95°C), high and low temperature alarms, power failure alarms, and self-diagnosis functions. The control panel features keys for buzzer control, alarm testing, value shifting, and entering settings.
Troubleshooting and error codes
| Error Code | Description | Action |
| E01 | Temp. sensor open circuit | Display E01 and 50°C alternately, buzzer beeps, remote alarm active. Compressor allowed ON. Press BUZZER key to stop buzzer. |
| E02 | Temp. sensor short circuit | Display E02 and -170°C alternately, buzzer beeps, remote alarm active. Compressor allowed ON. Press BUZZER key to stop buzzer. |
| E05 | Comp. protect sensor open circuit | Display E05 and chamber temperature alternately, buzzer beeps, remote alarm active. Press BUZZER key to stop buzzer. |
| E06 | Comp. protect sensor short circuit | Display E06 and chamber temperature alternately, buzzer beeps, remote alarm active. Press BUZZER key to stop buzzer. |
| E15 | Condensing fan motor locked | Display E15 and chamber temperature alternately, buzzer beeps, remote alarm active. Press BUZZER key to stop buzzer. |