Pullin Evolution Solar PES190 - FAULT FINDING; WARNING

15
15
FAULT FINDING
The Fault Finding chart below will enable operational
faults to be identified and their possible causes
rectified. Any work carried out on the Pullin Evolution
Solar water heater and its associated controls MUST
be carried out by a competent installer for unvented
water heating systems. In case of doubt contact
Service Support.
DO NOT TAMPER WITH ANY OF THE SAFETY
VALVES OR CONTROLS SUPPLIED WITH THE
PULLIN EVOLUTION SOLAR AS THIS WILL
INVALIDATE ANY GUARANTEE
Table 3: Fault Finding Chart
WARNING
Table 4: Standing heat losses (based on an ambient
air temperature of 20
o
C and a stored water tem-
perature of 65
o
C)
OTHER INFORMATION
ENVIRONMENTAL INFORMATION
Pullin products are manufactured from many recyclable
materials. At the end of their useful life they should be
disposed of at a Local Authority Recycling Centre in
order to realise the full environmental benefits.
Insulation is by means of an approved CFC/HCFC free
polyurethane foam with an ozone depletion factor of
zero.
per day
(kWh/24h)
per year
(kWh/365d)
190 2.11 770
210 2.30 840
250 2.45 894
300 2.72 993
Nominal
Capacity
(litres)
Standing Heat Loss
FA ULT POSSIBLE CAUSE REMEDY
1. Mains supply off. 1. Check and open stop cock.
2. Strainer blocked. 2. Turn off water supply. Remove strainer
and clean (see Maintenance section).
3. Cold W at e r Combinatio n V alve
incorrectl
y
fitted.
3. Check and refit as required.
1. DIRECT immersion heater not
switched on.
1. Check and switch on.
2. DIRECT immersion heater
thermal cut-out has o
p
erated.
2. Check. Reset by pushing butt on.
3. INDIRECT programmer set to
Cent ral He at in
g
onl
y
.
3. Check. Set to a Domestic Hot Water
p
ro
g
ramme.
4. INDIRECT bo iler not w orking. 4. Che ck boiler operat ion. If fault is
suspected consult boiler manufact urer's
inst ruct ions.
5. INDIRECT thermal cut-out has
operated.
5. Check. Reset by pushing button on cut-
out. Check operation of indirect
thermostat.
6. INDIRECT motorised valve not
connected correctly.
6. Check wiring and/or plumbing
connections to motorised valve (see Fig. 8).
1. INTERMITTENTLY
Expansion Vessel charge pressure
has reduced below 3.5bar.
1. See Maintenance section for re-charging
procedure.
2. CONTINUALLY
a. Cold W at er Combinat ion V alve
Pressure Reducer not w orking
correctly.
2a. Check pressure from Cold Water
Combinat ion V alve. If gre at e r than 3.5bar
replace Pressure Reducer cart ridge.
b. Expansion Valve seat damaged. 2b. Remove Expansion Valve cartridge.
Che ck condit ion of seat . If ne cessary fit
new Expansion Valve cartridge.
Wat er discharges from T&P
Re lief Valve
1. T he rmal cont rol failure NOT E
w at er w ill be ve ry hot .
1. Sw itch off pow e r t o imme rsion heat er(s)
and shut down boiler. DO NOT turn off
wat er supply. W hen discharge st ops check
all t he rmal cont rols, replace if fault y.
Milky water
1. Oxygenat ed w ater. 1. W ater from a pressurised system releases
oxygen bubbles when flowing. The
milkiness w ill disappear afte r a short w hile .
No hot water flow
Water from hot taps is cold
Wat er discharges from
Expansion Valve