Trane Chiller Error Codes

Chilled water inlet and outlet openings are covered for shipment. Each compressor has a separate compressor motor starter. The RTAC series features Trane’s exclusive Adaptive Control ™ logic, which monitors the control variables that govern the operation of the chiller unit.

Series R Air-Cooled Helical Rotary Liquid Chillers – RTAC Plus 140 – 350 Ton (60 Hz) RTAC Plus 140 – 300 Ton (50 Hz)

Diagnostics:

Hex Code	Diagnostic Name and Source
398	BAS Communication Lost. The BAS was setup as “installed” at the MP and the Comm 3 LLID lost communications with the BAS for 15 contiguous minutes after it had been established. Refer to Section on Setpoint Arbitration to determine how setpoints and operating modes may be effected by the comm loss. The chiller follows the value of the Tracer Default Run Command which can be previously written by Tracer and stored nonvolatilely by the MP (either use local or shutdown).
390	BAS Failed to Establish. The BAS was setup as “installed” and the BAS did not communicate with the MP within 15 minutes after power-up. Refer to Section on Setpoint Arbitration to determine how setpoints and operating modes may be effected. Note: The original requirement for this was 2 minutes, but was implemented at 15 minutes for RTAC
2E6	Check Clock. The real time clock had detected loss of its oscillator at some time in the past. This diagnostic can be effectively cleared only by writing a new value to the chiller's time clock using the TechView or DynaView's "set chiller time" functions.
8A	Chilled Water Flow (Entering) The entering evaporator water temp fell below the leaving evaporator water temp. by more than 2°F for 100 °F-sec. For RTAC this diagnostic cannot reliably indicate loss of flow, but can warn of improper flow direction through the evaporator, misbound temperature sensors, or other system problems.
5EF	Comm Loss: Chilled Water Flow Switch. Continual loss of communication between the MP and the Immediate Functional ID has occurred for a 30 second period.
5F2	Comm Loss: Cond Rfgt. Immediate Latch Same as Comm Loss: Chilled Water Flow Switch.
694	Comm Loss: Electronic Expansion Valve, Circuit #1. Same as Comm Loss: Chilled Water Flow Switch Remote.
695	Comm Loss: Electronic Expansion Valve, Circuit #2. Same as Comm Loss: Chilled Water Flow Switch Remote.
5DE	Comm Loss: Emergency Stop. Same as Comm Loss: Chilled Water Flow Switch Remote Stop.
68E	Comm Loss: Evap Oil Return Valve, Cprsr 1A. Same as Comm Loss: Chilled Water Flow Switch Remote.