Sub-Zero Built-in Series

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Electronic Control System

3-36

#7019014 - Revision A - October, 2010

Built-In (BI) Series

Fault Code Recall Mode

Fault Code Recall Mode allows a Service Technician to view historical data that the electronic control system may

have stored if specific components experienced or detected problems. This data can be displayed in a code format

in the LCD in this mode, with the data storage device capable of storing up to fifty (50) fault codes. If more then fifty

(50) fault codes are detected, each new fault code will bump the oldest fault code.

NOTE: As mentioned on the preceding page, The key strokes to initiate Fault Code Recall Mode and Diagnostic

Mode are the same. If the electronic control has not recorded any Fault Codes, then the key strokes listed below

will initiate Diagnostic Mode, which was explained on a preceding page.

To initiate Fault Code Recall Mode, the unit must be ON, then press and hold either COLDER key, and press the

POWER key, then release both keys (See Figure 3-67). If any Fault Codes were logged they will be displayed in the

LCD at this time. To see if multiple Fault Codes are stored, press a WARMER or COLDER key to toggle through the

codes (See Figure Figure 3-68 and the Fault Code Table with LCD Correlation Diagram on following pages).

NOTE:

• Do not

press and hold the COLDER and POWER keys for more than ten (10) seconds, as this will initiate Manual

Zone Component Activation Mode, which is covered later in the section.

• Fault Code Recall Mode will end ten (10) seconds after the last key stroke.

• To clear fault codes the problem must be corrected, then press the ALARM key for fifteen (15) seconds. Failure to

do this will cause the Service icon to display steady.

• If Fault Codes are present but the desire is to view current temperature readings from the thermistors (Diagnostic

Mode), then press the ALARM key; this will shift the electronic control system into Diagnostic Mode.

PURE AIR WARMER COLDER WARMER COLDER ALARM POWER MAX ICE ICE MAKER LIGHTS

Figure 3-67. Initiate Fault Code Recall Mode - Press and Hold Either COLDER Key, Then the POWER Key

(Example Shown: “30 8 30”, Service Wrench Flashing and Alarm Chiming = Water Valve not Opened but

Water Detected Passing Through)

PURE AIR WARMER COLDER WARMER COLDER ALARM POWER MAX ICE ICE MAKER LIGHTS

Figure 3-68. Press WARMER (or COLDER) Key to Toggle Through Fault Codes

(Example Shown: “10 2 02” with Service Wrench Steady = Freezer Cabinet Thermistor Unstable)

(See the Fault Code Table with LCD Correlation Diagram on following page)

(See the Fault Code Troubleshooting Tables in Troubleshooting Guide section of this manual)

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