1. Before using the unit, carefully read the warning section in the technical manual and strictly follow all warnings. 2. Installation, gas type conversion, and adjustment of the water heater must be performed only by qualified professionals authorized by the manufacturer. Gas or water leaks, incorrect flue installation, or flue...
Filling the System with Water 1. Before filling, open the automatic air vent valve on the circulation pump (this valve is pre-opened at the factory and requires no action by the user) and the air vent valves on terminal devices of the heating system. 2. Introduce softened water at the...
LED Fault Indicator Code Meaning Possible Cause E1* Fake flame fault, residual flame fault, or ignition failure Flame signal detected during startup; flame signal detected when combustion stops; no flame detected after ignition. E2* Overheat fault Temperature > 90°C, causing the overheat relay to open. E3* Flue draft pressure fault...
1. Routine Inspection 1.1 Monitor heating system pressure — the gauge reading should remain within 0.5–2 bar. 1.2 Inspect gas supply lines and flue pipes for disconnection, damage, or blockage. 1.3 Check the display screen for fault messages or error codes; contact a qualified technician if any appear. 1.4 At...
1. Wi-Fi Pairing Button Reference Table No. Display Model Wi-Fi Pairing Instructions Matching QR Code I TY10368 While powered off, press and hold the Mode button for 3 seconds until the Wi-Fi icon flashes. Fig. 1 II HC-114B While powered off, press and hold the Mode button for 3 seconds...