Cleaning; Maintenance; Operating Aspects That Must Not Be Interpreted As Problems 40 4.9 Troubleshooting - Innova ehpocaGEO 8M Installation Manual

USE AND MAINTENANCE
contacted.
To re-start the water-water heat pump after a long period
of stop and inactivity, request an intervention of the
Customer Technical Service.
4.6

Cleaning

The only cleaning operation required on behalf of the
person responsible for the system is the external brushing
of the water-water heat pump that is to be performed
using only cloths dampened with water and soap.
For persistent stains, use a solution of 50% methylated
spirit in water or a specifi c product. When the cleaning is
completed carefully dry the surfaces.
4.7

Maintenance

Periodic maintenance is indispensible for maintaining the
water-water heat pump always efficient, safe and reliable
in time.
This can be carried out every six months, for some
interventions and annually for others by the Customer
technical service
authorised and always has original spare parts available.
The annual maintenance programme that the customer
technical service or the authorised technician must
perform envisages the following checks and operations:
4.8 Operating aspects that should not be interpreted as problems
- The compressor does not start again until 3 minutes
after being shut off.
- During operation in heating mode of systems with
4.9 Anomalie e rimedi
Through the alarm log menu, you can view the type and
chronological order of the last 5 alarms that have occurred.
There are two different display flashing frequencies
for manual reset (at 0.5 seconds) and automatic reset
Allarm Description
TXXX Probe broken or disconnected
AL1
AL2 Low pressure switch triggered
High pressure switch triggered
AL3
Compressor
AL4
temperature
Compressor
AL5
temperature
Compressor driver in protection
AL6
Compressor
AL7
temperature
Compressor
AL8
temperature
AL 11 4-way valve malfunction
40
that is technically prepared
Intervention method
If one of the probes (TI, TM or PR) is out of range or disconnected. If any
sensor is not present you can disable it from the Inputs/outputs settings
menu.
Low pressure switch connected to the open digital input DM2. This alarm
has a 90 second detection delay from when the compressor starts, set by
parameter PF138.
High pressure switch connected to the open digital input DM1.
driver high
Communicated directly by the SSPM driver.
head high TM4 probe detected according to the set-point set by parameter PF126
(95°C).
Communicated directly by the SSPM driver. Inverted power supply phases
of the three-phase version.
intake low Detected by probe TM6 and the trans.PR1 according to the set-points set by
parameters PF173 (-20°C) and PF174 (-21°C).
drain high Detected by probe TM2 according to the set-point set by parameter PF127
(95°C).
If the difference between probes TI20, TI21, TI22 and TI23 is less than 1°C 2
minutes after compressor start-up.
EN
When there is a boiler in the system, check that the
circulating water temperature within the water-water heat
pump does not exceed 65°C when it is operating.
Do not use sponges with abrasive products or powder
detergents.
All cleaning operations are forbidden until the unit has been
disconnected form the mains power supply by turning the
master switch on the system to OFF.
- Check of the expansion tank pressure.
- Filling the water circuit.
- Air presence in water circuit.
- Efficiency of safety units.
- Power supply voltage.
and - Electrical absorption.
- Tighten electrical connections.
- Check the operating, overheating and sub-cooling
pressures.
- Verify the regular operation of the circulation pumps
and diverter valves.
heat pump, heat is produced a few minutes after the
compressor starts.
(frequency at 1 second). When the reset mode is manual,
you can restore it by pressing the SET key for more than
3 seconds.
U I S