4A6H6 EEV board and 4TWR6 outdoor TXV
American Standard 4A6H6036E EEV control fault LED 1–10 and status patterns, close and open valve tests, fault clearing and the EEV symptom chart; 4TWR6042H outdoor TXV heating-mode troubleshooting flowchart.
American Standard 4A6H6036E EEV control fault LED 1–10 and status patterns, close and open valve tests, fault clearing and the EEV symptom chart; 4TWR6042H outdoor TXV heating-mode troubleshooting flowchart.