MERIDIAN INSTRUCTIONS Control Panel 1 2 3 4 5 1.3 1.4 1.2 1.1 1.5 1 Function mode selector 2 Domestic hot water temperature (do not touch) 3 Heating temperature (do not touch) 4 Display screen 5 System pressure 1.1 Off 1.2 Heating and domestic hot water mode 1.3 Heating only mode 1.4 Reset (hold 2 seconds, turn back to 1.2 or 1.3 as applicable) 1.5 Serving (do not touch) MERIDIAN INSTRUCTIONS Display Screen During normal operation the digits in 4.1 indicate the flow temperature value. 4.1 Temperature reading /Fault Code 4.2 Used only for “Service” 4.3 “Reset” request 4.4 Selector on “Summer” 4.5 Heating request 4.6 Selector switch on “Winter” 4.77 Sanitary hot water request (if tank present) 4.8 Request for intervention/ resetting 4.9 Activation of service function (for support service only) 4.10 Activation of anti– freeze function 4.11 Burner start up MERIDIAN INSTRUCTIONS Fault Finding Code Fault Type of Block F1 No start-up or no flame detected Manual resetting is required F2 Safety thermostat intervenes Manual resetting is required F5 Faulty supply sensor It automatically resets if fault disappears F7 Fault on flue gas sensor resistance Fixed with automatic reset - signalling for 24 hours F8 Faulty external probe It automatically resets if fault disappears F11 Hydraulic pressure <0,5 bar into heat exchanger It automatically resets if fault disappears F12 Faulty tank probe (sonda bollitore) It automatically resets if fault disappears F16 Faulty fan It automatically resets if fault disappears F27 Hydraulic pressure <0,5 bar into heat exchanger It automatically resets if fault disappears When error codes F1 and F2 are displayed the boiler can be reset by turning the function mode selector (1) to the reset position (1.4) for two seconds and then returned to the relevant heating position, either 1.2 for heating and hot water or 1.3 for heating only. If the block persists, contact Hicks Hydronics. A block with the F10 code can be caused by lack of water in the system or by blocked or faulty circulator. In the first case, check that the system load pressure on the boiler pressure gauge (5) is approximately 1÷1.3 bar, in the second case, call Hicks Hydronics. For all remaining block codes that do not reset even after the switching off the boiler and then switching it on again, contact Hicks Hydronics.
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