Traulsen Refrigerator Error Code Call Service: Possible System Leak

What does Traulsen Call Service mean?

After every compressor start, the Intela-Traul control watches the discharge temperature, the temperature of the refrigerant leaving the compressor. A healthy system heats that line up quickly. If the discharge temperature does not rise 45 F within five minutes, the control concludes that there is too little refrigerant moving to carry the heat, and that the system may be leaking. The display then shows Call Service (system leak). The text stays on until a technician repairs the unit, and the alarm repeats after 24 hours if it was silenced. The message appears on R and A Series cabinets, such as the RHT232WUT and RLT132WUT, and does not appear on remote models. The manual lists a low refrigerant charge, a refrigerant leak in the sealed system, a discharge sensor reading low, and a compressor not pumping as it should. Only a technician can tell these apart, so keep an eye on the cabinet temperature meanwhile.

Affected models and control systems

Traulsen R and A Series cabinets with the Intela-Traul control, such as the RHT232WUT and RLT132WUT. Remote models do not show this message.

Code numbers and their meaning can change between control generations. We match the full model and control before acting on a code.

What you may notice

• Call Service (system leak) shows on the control
• An alarm sounds and returns after 24 hours if silenced
• Cabinet temperature rises over time

Possible causes

Listed in Traulsen's documentation

• Low refrigerant charge
• A refrigerant leak in the sealed system
• A discharge sensor reading low
• Compressor not pumping as it should

Other likely causes — what usually sits behind Call Service on this control. A technician confirms which one it is before any part is replaced.

• A slow leak at a coil joint worn by years of vibration and condensate
• A discharge sensor lead that has slipped off the line it reads

Safe checks before calling for service

How a technician diagnoses Call Service

1. Read the message and check the cabinet temperature.
2. Verify the discharge sensor reading with a thermometer on the line.
3. Leak-check the sealed system with a certified detector.
4. Measure pressures and compressor performance.
5. Repair the leak, evacuate and recharge to specification.
6. Clear the message after the repair.

How Call Service differs from similar codes

Call Service (system leak) is a discharge-temperature test after each compressor start. Clean Filter is the condenser clean alarm, and CAB, COL and DIS Snr are sensor messages.

Technical reference

Document

R & A Series Owner Manual (Oct 2004), VII-a Alarm explanations

Edition

FORM NUMBER TR35743 REV. 10/06, P/N 375-60176-00 (the replacement copy is Rev 10/06, not Oct 2004; the title we cited says Oct 2004)

Models / control

Intela-Traul R & A (not remote models)

Section

VII. A - Alarm Explanations (INTELA-TRAUL), printed p. 9 (PDF p. 10)

Checked

October 2026

We use the maker's document to read the code and do not reproduce it. Always confirm the complete model and control before applying these steps.