Error Indicators & Troubleshooting - NuAire NU-5510 Operation And Maintenance Manual

11.0 Error Indicators & Troubleshooting
Step 1 NOTE ALL ERROR INDICATORS. When the Incubator is running, any and all red or yellow
LEDs indicate an error. Pressing any key will silence the audible alarm for 15 minutes.
Step 2 CLEAR ERROR INDICATORS. Error indicators can be cleared by pressing the mode key
to Setup and back to Run.
Step 3 MONITOR REOCCURRENCE OF ERROR INDICATORS. If reoccurrence of the error
indicator is immediate or daily, use guide below to correct the situation.
DISPLAYED ERROR
CODE
OM0135
Error Indicator Troubleshooting Guide
CODE DESCRIPTION
Temperature System
-Temperature over setpoint
Normal mode and Decon Cycle
-Temperature time out error during
normal running and in Decon Cycle
- Decon Time Out
-Sensor temperature (differential) error
normal running. Occurs when difference
between sensors exceeds 4°C.
-Sensor temperature (differential) error
Decon Cycle. Occurs when difference
between sensors exceeds 10° C.
CO2 Sensor Shroud Heater
-Defective shroud temperature sensor
-Low shroud temperature
CHECKS & CORRECTIONS
1. Check temperature sensor calibration.
2. Faulty TRIAC, replace control board.
1. Check temperature sensor calibration
2. Replace fuse.
3. Faulty TRIAC, replace control board
4. Faulty chamber heater contact NuAire
Technical Service.
5. Door/Perimeter heater needs to be
increased with a high temperature
set-point in a low ambient temperature
1. Check temperature sensor calibration
2. Check connection on control board
3. One or both temp sensors faulty, replace
1. Check temperature sensor calibration
2. Check connection on control board
3. One or both temp sensors faulty, replace
1. Confirm it is plugged in at board
connector P6.
2. Replace CO
1. Check control board output to relay,
replace board if faulty.
2. Check heater relay for function, replace
if faulty
3. Check both shroud heaters for function,
replace if faulty.
48
shroud temperature sensor
2