IVT Rego 5101 Installation Manual page 35

5.6.35 High temp. T6 hot gas (C)
Function: Hot gas sensor T6 exceeds 125 °C. At
recurrence the alarm becomes a category B alarm
( Chapter 5.6.12, page 31).
Heat pump: All.
Not displayed in the alarm list.
5.6.36 Tripped high pressure switch (C)
Function: High pressure switch in the refrigerant circuit
has tripped. At recurrence the alarm becomes a category
B alarm ( Chapter 5.6.13, page 31).
Heat pump: All.
Not displayed in the alarm list.
5.6.37 Tripped low pressure switch (C)
Function: Low pressure switch in the refrigerant circuit
has tripped. At recurrence the alarm becomes a category
B alarm ( Chapter 5.6.14, page 32).
Heat pump: All.
Not displayed in the alarm list.
5.6.38 High temperature T8 (C)
High temperature T9 (C)
Function: T8 > 65 °C and T9 > 59 °C give alarm. At
recurrence the alarm becomes a category B alarm
( Chapter 5.6.15, page 32).
Heat pump: All.
Not displayed in the alarm list.
5.6.39 Low temperature T10 (C)
Low temperature T11 (C)
Function: T10 < -8 °C and T11 < -8 °C (factory setting)
give alarm. At recurrence the alarm becomes a category
B alarm ( Chapter 5.6.16, page 32).
Heat pump: All.
Not displayed in the alarm list.
5.6.40 Low temp. diff. heat transfer fluid (C)
Function: The difference T8-T9 is less than 5 K after 15
minutes of compressor operation.
Heat pump: All.
B Check the valves.
B Clean the particle filter for the heating system.
B Check that the sensors show correct temperature,
compare with resistance table.
B Check heat carrier pump G2.
6 720 645 172 (2010/07) en
5.6.41 High temp. diff. heat transfer fluid (C)
Function: The difference T8-T9 exceeds 15 K after 15
minutes of compressor operation.
Heat pump: All.
B Clean the particle filter for the heating system.
B Check the valves.
B Check that the sensors show correct temperature,
compare with resistance table.
B Check heat carrier pump G2.
5.6.42 High temp. diff. collector circuit (C)
Function: Differential T10-T11 exceeds 10 K after 15
minutes compressor operation.
Heat pump: All.
B Clean the particle filter for the collector circuit.
B Check the valves.
B Check that the sensors show correct temperature,
compare with resistance table.
B Check collector circuit pump G3.
5.6.43 Therm. disinfection unsuccessful (C)
Function: T3 has not reached 70 °C within three hours
of starting thermal disinfection. The situation can arise if
a lot of hot water is used at the same time as thermal
disinfection. The alarm resets after a time and a new
attempt is made on the next occasion.
Heat pump: Heat pump with T3 as local sensor.
B Check that the 3-way valve is in the correct position.
B Internal electric additional heat (E21): Check that a
sufficient number of stages have been set.
5.6.44 Short oper. time in hot water mode (C)
Function: Compressor operation for hot water is on
average shorter than 10 min per start based on a
minimum of 5 starts within 24 hours. The alarm resets
automatically at midnight.
Heat pump: Heat pump that makes hot water.
B Check that the hot water system is correctly installed.
B Check that the installation is correctly dimensioned.
B Check that any flow adjustments are correctly
implemented.
Information/Alarms
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