Error Codes and Suggested Resolutions
Service Manual B-11
158
Category: UI
Alarm Priority: Low
Description: One of the following conditions occurred:
• Temperature was more than ±1°C from the setpoint for at least 30 consecu-
tive seconds after the setpoint was reached.
• Temperature did not reach the specified setpoint within 10 minutes.
Resolution: Check for:
• Blockages in the air intake, hose, and filter.
This error may also appear due to issues at the customer site:
• Low mains voltage
• Ambient temperature outside of specification.
159
Category: UI
Alarm Priority: Low
Description: Temperature > 48°C for at least 30 consecutive seconds.
Resolution: Replace the power PCBA. See page 10-31.
163
Category: UI
Alarm Priority: Low
Description: Bad CRC on packet received from AD microprocessor.
Resolution: Replace the ribbon cable. See page 10-19.
If this does not resolve the issue, try replacing the power PCBA. See page 10-31.
If the problem persists, try replacing the UI PCBA. See page 10-12.
This error may also appear due to electromagnetic interference from other devices
at the customer site. Advise the customer to try increasing the distance between
devices, repositioning the cabling, or plugging the devices into separate outlet
circuit branches. See Electromagnetic Compatibility (EMC) on page 13-4 for addi-
tional guidance.
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