IBC SL 20-160 G3 - Boiler Operation; Startup and Shutdown Procedures; Start-up Checklist Verification

5-7
TROUBLESHOOTING
SL 20-115 G2 MODULATING GAS BOILER
SL 10-85 G3, SL 14-115 G3, SL 20-160 G3, SL 30-199 G3 MODULATING GAS BOILERS
SYMPTOM DIAGNOSIS REMEDY
TEMPERATURE SENSOR
ERROR
Touch Screen Message:
Error - Max. In-Out Temp. Exceed.
-> Check water ow Water
temperature signal not within
acceptable range. Potential ow
or sensor failure. Consult service
technician.
Current outlet
temperature exceeds
operating limit.
• Check water ow.
Defective or
disconnected
temperature sensor.
• Check wiring to temperature sensor and control
module.
• Check temperature sensor. See Section 5.2.1.
MISCELLANEOUS
Touch Screen Message:
Blank – screen dark, but fan
running Indicative of power-surge
damage to appliance
• Check transformer; replace if damaged.
• Check circuit board for visible damage.