Installation, user and maintenance manual
– GAHP-A
19
For the operating codes generated by the CCP/DDC, refer to the manuals supplied with
the unit.
operating codes generated by the electronic board during the start-up of the
appliance
If the appliance remains inactive for a prolonged period, it is possible that air is present in
the gas pipes. In this case, activation fails and the appliance reports the operating code:
"u_12" - flame controller arrest (temporary) (see Paragraph 9.1 OVERVIEW AND OPERAT-
ING CODES/TROUBLESHOOTING
→
78) and after a brief interval the appliance automati-
cally launches the start up procedure again. If code (u_12) is signalled 4 times on succes-
sive activation attempts, the code persists, the appliance locks out the flame controller
and displays the following operating code: "E_12" – flame controller arrest (see Paragraph
9.1 OVERVIEW AND OPERATING CODES/TROUBLESHOOTING
→
78). In this case reset is
not automatic.
To restore operation of the appliance, carry out a reset of the flame control unit via menu
2 of the controller: the procedure is illustrated in Paragraph 4.3 RESET OPERATIONS AND
MANUAL DEFROSTING
→
22. After it is reset, the appliance will make a new attempt to
activate.
If the appliance locks out several times, contact a Robur TAC by calling the
Technical Serv-
ice Department
of Robur S.p.A. (tel. +39.035.888111).
When activation is successful, the appliance is managed by the on-board controller (see
following paragraph).
4�2
on-BoARd eLeCtRonICs
The following descriptions refer to the S61 controller with firmware version 3.024.
The appliance is fitted with an S61 microprocessor controller with Mod10 modulation
controller mounted above it (see Figure 4.1 On-board controller
→
20).
the s61 controller, in the electrical panel, controls the appliance and displays data, mes-
sages and operating codes.
Programming, control and monitoring of the appliance take place by interacting with the
display A and knob B shown in Figure 4.1 On-board controller
→
20. The CAN-BUS port
connects one or several appliances to the CCP (if present) or a DDC (if present).
the Mod10 controller (see detail D in Figure 4.1 On-board controller
→
20) is used for
combustion modulation and variable rate pump control.
