35
Protective
function
Description
Note/
variable
Sensor control
Critical sensors - output
water, input water
If temperature sensor is out of range (-50 to
120°C) critical error is signalized and heat
pump stops operation.
Error autoreset
max. 5 times
Other sensors
Error is signalized, but have not got any
influence
to
primary heat pump operation.
Only the relevant sections of control system
are deactivated. E.g. if DHW temperature
sensor is faulty so DHW heating
is deactivated.
Outdoor unit
error
Outdoor unit reports error
Error is signalized, but have not got any
influence for primary heat pump operation.
If the heat pump does not supply power,
bivalent source is used automatically.
Preheat
compressor
Compressor preheat after
power outage
After voltage restoration is used bivalent
source for limited time (settings at service
access). Outdoor unit is in compressor
preheat mode. In default mode is not active
(zero time is set). In the standard installation
is not required to use.
At installations with often power cut
is recommended to set compressor preheat.
Preheat comp.
- service
access
Output water
temperature
limits
Limitations of range of water temperature
user settings (default 20 to 60°C).
Minimal
temperature of
output water /
Maximal
temperature of
output water
- service
access
Compressor
restart
Compressor protection
against frequent starts
When supplied power is higher than object
loss, the heat pump began cycling.
This function protect unit against frequent
starts of compressor
.
(default settings: 10 min / 5%)
Compressor
restart,
Compressor
restart
threshold
- service
Hysteresis
cooling water
limit
Protection against low water
temperature in cooling
If cooling water temperature falls below set
temperature reduced by temperature
of hysteresis cooling water limit, outdoor unit
stops operation and cooling is interrupted.
T Hysteresis
cooling water
limit
- service
access
Autoreset max. 5
errors
Autoreset limitations
If the critical error repeats 5 times, error
autoreset is deactivated and the heat pump
goes to stop state. Display the last fault
Error autoreset
max. 5 times
Summary of Contents for GSH-IRAD
Page 1: ...USER S MANUAL AIR TO WATER HEAT PUMP GSH IRAD ...
Page 2: ... Original instructions ...
Page 23: ......