IVT Greenline HT Plus C Assembly, Commissioning And Maintenance Manual page 33

Motor cut-out compressor (MB1)
Possible cause 1: Intermittent fault or overload on the power
supply.
Action: 1. Press the Ackn. button.
The alarm indication goes out even if the fault has not
been rectifi ed.
2. Reset the motor cutout on the heat pump. (Fuse 1).
3. Wait for the heat pump to start.
Possible cause 2: Current level (A) on the motor cut-out is set too
low.
The current drawn by the compressor varies during
summer/winter operations.
Action: 1. Contact your dealer.
Possible cause 3: Contactor or cut-out faulty, or loose electrical
connections to the compressor.
Action: 1. Contact your dealer.
Possible cause 4: Compressor error.
Action: 1. Contact your dealer.
Motor cut-out HTF pump (MB2)
(Only valid for models C11, E11, E14 and E17)
Possible cause 1: The HTF pump is blocked due to contamination.
Action: 1. Press the Ackn. button.
2. Loosen the venting screw and remove the dirt.
3. Help to start the pump with a screwdriver.
The alarm indication goes out even if the fault has not
been rectifi ed.
Possible cause 2: Faulty electric motor on HTF pump.
Action: 1. Contact your dealer.
Possible cause 3: Temporar y error.
Action: 1. Contact your dealer should repeated faults occur.
What to do if a fault occurs in the heatpump
The reset switch for the compres-
sor can be found under heading
Fuses and resetbuttonsfor the
heatpump.
The alarm indication goes out when
acknowledging the alarm even if
the fault has not been rectifi ed.
33
The menu display shows:
ALARM (MB1)
Compr. circ. switch
080922 16:08:15
Info Ackn.
Note
The menu display shows:
ALARM (MB2)
HTF c-pump switch
080922 16:08:15
Info Ackn.
Note