Faults And Malfunctions; Fault Detection And Troubleshooting; Malfunctions - Rotex HPSU compact 508 Instruction Manual

5.1

Fault detection and troubleshooting

5

Faults and malfunctions

The main control unit integrated in the HPSU compact detects a fault generated by the heat pump system and indicates it on the
display via a fault code.
Troubleshooting
• Detecting and remedying the cause of the malfunction.
• Contactor triggered:
– Nothing shown on the display of the user interface. Ascertain cause of triggering the contactor and remedy fault. Start
• Contactor not triggered:
– No fault codes are shown but the system is not working properly. Look for causes and remedy them (see chapter 5.2
– Fault codes are displayed and the Operation LED flashes as long as the fault condition is present. Look for causes and
Tab. 5-1
5.2

Malfunctions

Malfunction
System not working
(Operation LED off, No mains voltage.
nothing on the display)
Time or weekday have not been set correctly.
Program clock is not working
or programmed switching
Program clock is deactivated.
times have been carried out
During a switching time the user made a manual
at the wrong time
setting (e.g. changed the target temperature,
changed the operating mode),
Additional control unit does
Operating system of additional control unit crashed.
not respond to entries
Operating data are not
updated
Operating system of additional control unit crashed.
BA ROTEX HPSU compact 2 - 04/2011
up system again.
Once the cause has been removed, a test run of the system is carried out. After that, the system continues to run as
normal.
"Malfunctions").
Once the cause has been eliminated, the system continues to work normally.
remedy them (see chapter 5.3 "Fault codes"). To unlock the system, the system has to be switched off manually to reset
the fault code and then must be started again. The procedure is described in tab. 5-1.
Once the cause has been eliminated, the system continues to work normally.
Operating mode
Room heating
Room cooling
ON
ON
OFF
OFF
Procedure for switching off the system manually
Possible cause
Instructions for switching off the system
Water heating
ON
OFF
ON
OFF
• Switch main switch of system on.
• Switch on system fuse(s).
• Replace system fuse(s).
• Set the clock.
• Set the weekday.
• Activate program clock.
• Deactivate program clock and activate it again.
• Select correct operating mode.
• Carry out RESET of additional control unit.
• Restart system (mains voltage).
• Carry out RESET of additional control unit.
• Restart system (mains voltage).
• Have the system checked by a service engineer.
5 x Faults and malfunctions
Switch system off by
Press the key
1x
1x
—
—
Possible solution
Press the key
1x
—
1x
—
49