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UAB KOMFOVENT we reserve the right to make changes without prior notice
RHP STANDARD_guide_21-03
Code
Message
Possible cause
User‘s actions
12B
High pressure on
compressor
1. Refrigerant pressure is too
high due to temperature
conditions.
2. Refrigerant pressure is too
high due to system failure.
1. When the room/outdoor temperature changes
or pressure drops, heat pump operation will be
resumed automatically.
2. Contact authorised service.
13B
Low pressure on
compressor
1. Refrigerant pressure is too low
due to temperature conditions.
2. Refrigerant pressure is too
low due to system failure or
refrigerant leak.
1. When the room/outdoor temperature changes
or pressure rises, heat pump operation will be
resumed automatically.
2. Contact authorised service.
14B
Service time
Time for annual periodic
maintenance.
Clear the message after performing periodic
maintenance.
15B
Evaporator icing
Defrosting of the evaporator
heat exchanger failed.
Contact authorised service.
16B
Compressor failure
Compressor is overheated or not
running.
1. Check the heat pump circuit breakers.
2. Contact authorised service.
19B
Compressor off
Heat pump stopped due to
insufficient airflow (see chapter
“Heat Pump”).
Increase airflow setting.
20B
Compressor off
Heat pump is not running when
the outdoor temperature is
between 15°C and 20°C (see
chapter “Heat Pump”).
Heat pump will start automatically as soon as the
outdoor temperature changes.
95B
Low heat exchanger
efficiency
1. Heat exchanger efficiency
decreased due to unfavourable
temperature or humidity
conditions.
2. One or two faulty temperature
sensors inside the unit.
3. Air mixing between different
flows.
1. Message will disappear automatically when
the air temperature or humidity changes and
efficiency increases.
2. Check the readings of the temperature sensors.
If a sensor(s) needs to be replaced, contact an
authorized service representative.
3. Check the unit door for tightness and all
gaskets or sealant joints for wear.
96B – 111B Compressor failure
Heat pump is not working or is
malfunctioning.
1. Check the heat pump circuit breakers.
2. Contact authorised service.
112B
Water pump/
coil alarm
Signal from the water flow
sensor or circulation pump
received (see “Water flow
monitoring function“).
Check if there is enough water in the system and
whether the circulation pump and water mixing
valves are working.
127B
Service mode
Temporary special operating
mode that can only be activated
by a service specialist.
If the unit has been previously repaired, contact
the person who repaired the unit to make sure
that the service mode can be disabled. Service
mode is turned off by deleting a message.
1A, 2A
Supply air temp.
sensor failure
Not connected or faulty supply
air temperature sensor.
Check whether the sensor is connected. If
a sensor needs to be replaced, contact an
authorized service representative.
3A, 4A
Extract air temp.
sensor failure
Not connected or faulty extract
air temperature sensor.
Check whether the sensor is connected. If
a sensor needs to be replaced, contact an
authorized service representative.
Summary of Contents for RHP Standard
Page 1: ...RHP Standard USER MANUAL EN ...
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