7
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Service and maintenance
100
FA ROTEX HeatPumpSolarUnit - Part 2 - 05/2009
• Visual inspection of the external cabling.
Repair damaged parts or replace them.
• Check condensation water drain and drainage hoses on the underside of the Outdoor Module (RRHQ).
If necessary, remove blockages from the drain; exchange faulty or damaged parts.
• In the case of heated condensation water drainage hoses, check the heating function.
Replace defective parts.
• After completing the work, replace all cladding and covers.
7.2.2 Indoor Module (RKHB)
• Visual inspection of the user interface (2) for fault codes displayed.
If applicable, remedy fault (see Chapter
8.1 "Troubleshooting").
• Disconnect the system from the power supply.
• Remove outer cover of the Indoor Module (RKHB) (see Chapter
4.3.2 "Indoor Module (RKHB)").
• Remove cover from switch box (1) of the Indoor Module (RKHB) (see Chapter
4.6.3 "Connecting Indoor Module (RKHB)").
• Visual inspection of mechanical, hydraulic and electrical components for wear and loose parts inside the Indoor Module
(RKHB).
Repair damaged parts or replace them.
• Visual inspection of covers, cladding and fastening elements for wear and for loose parts in the Indoor Module (RKHB).
Repair damaged parts or replace them.
• Leakage control on lines and components of the refrigerant system and the hydraulic system.
• Repair damaged parts or replace them.
• Visual inspection of the external cabling.
Repair damaged parts or replace them.
• Check state of drainage hose (5) of the safety pressure relief valve (3) in the Indoor Module (RKHB) and that it has been
correctly laid.
• Clean the water filter (7).
• Check function of contactors in switch box (1) (resistance measurement).
All contacts of these contactors must be in the open position.
• Clean outer cover of the Indoor Module (RKHB).
• Check the system water pressure is <3 bar on the pressure gauge (6).
and if necessary the fitting or adjustment of the pressure reducer.
• Switch system on and start test run (see chapter 5.1.5).
• Visual inspection of the user interface (2) for fault codes displayed.
If applicable, remedy fault (see Chapter
8.1 "Troubleshooting").
• For test purposes, operate system in all operating modes (see Chapter
6 "Operation").
Functional control by checking the temperature display and the switching states of the individual operating modes (see
Chapter
6 "Operation").
1
Switch box
2
User interface
3
Safety pressure relief valve
4
Container for Backup Heater (BH)
5
Drainage hose
6
Pressure gauge
7
Water filter
Fig.7-3
Servicing relevant components Indoor Module (RKHB)
