SC No. Type Error Name/Error Condition/Major Cause/Solution
SC542-02 A Thermopile (Center) does not reload
(T21) degrees C not reached after fusing lamp 1 ON for specified time
(sec.)
SC542-03 A Thermopile (Center) does not reload
Heating central reload permission temperature not reached after fusing
lamp 1 ON for specified time (sec.)
SC542-05,
-06
D
Thermopile (Center) does not reload (Low Power)
-
• Thermopile lens dirt
• Thermopile modification/float
• Outside input voltage guarantee
• After excessive temperature rise prevention unit operation
1. Check the power supply voltage and reconnect the cable to the
outlet.
2. Replace the Thermostat (Center).
3. Reconnect the Fusing Lamp.
4. Replace the Thermopile (Center).
5. Replace the BCU, or PSU (AC controller board).
SC No. Type Error Name/Error Condition/Major Cause/Solution
SC543-00 A Thermopile (Center) high temperature detection (software)
Above (T3) degrees C detected for specified time (sec.) continuously.
Detection period 100ms, detection count: 10 times or more.
• Triac short-circuit
• IOB board defective
• BCU board defective
Service Call 501-584
919
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