Whispa - Myson WHISPA III 5000 WM Manuel D'installation, D'utilisation Et D'entretien

32356 WHISPA III Manual US+French.qxp_Layout 1 19/03/2018 11:57 Page 8
EN
10.0 Troubleshooting
Once installed this fan convector becomes an integral part of a
complete heating system that includes boiler, pump, other
emitters such as radiators and fan convectors, and a number of
heating controls, dependent on system complexity. An apparent
Problem
Heating Mode -
No Fan
Heating Mode
poor heating
performance and/or
unit cycles on
low limit thermostat
If the fan convector is still faulty after checking the above, call your installer or MYSON.
Common Installation Faults
For optimum performance, this unit must be correctly sized to
match the heat loss requirements of the space it is required to
Problem
Poor heating
performance
Poor heating
performance
(unit may cycle on
low limit thermostat)
11.0 Maintenance
Before undertaking any maintenance activity isolate the
electrical supply.
Maintenance should be restricted to occasional removal of dust
and lint around the front overplate.
Spares List
Motor / Fan Assembly WHISPA III
Motor / Fan Assembly WHISPA III
Possible Causes
Room thermostat not calling for heat
Unit not switched on at breaker panel
Breaker tripped at panel
Water temperature reaching unit
below 110°F
Low water temperature to unit
Poor water flow
Unit incorrectly sized for heat loss of room
System incorrectly balanced with unit starved of hot water flow
Description
® 5000
®
9000
Switch, 3 way
Switch, 2 way
Low Limit Thermostat
Wiring Harness
Cover Plate 5000 WM
Cover Plate 9000 WM
WHISPA III
problem with this unit may be the result of system controls being
incorrectly set and can be solved easily without calling out your
installer or MYSON. Before calling your installer or MYSON,
please carry out the checks listed below.
Turn up room thermostat
Check all wiring, reset breaker
Boiler ON and set to high
Circulating pump running
Turn up boiler thermostat
Vent air from heating system
heat, and the heating system must be correctly designed to
provide adequate flow of hot water to the unit (see Section 2).
If the recommendations in Section 2 are not followed,
problems may arise as detailed below.
Possible Causes
Boiler thermostat set too low
Lack of flow to fan convector -
Pump set on low setting
Isolating valves not fully open
Pipe sizing to unit too small
This unit should be serviced periodically by a competent person.
This should involve internal cleaning of the heat exchanger using
a soft brush or vacuum cleaner, taking care not to damage fan or
heat exchanger.
Part Number
7100088
7100090
1300025
1300024
1260007
3001047
7000547
7000548
®
5000 WM & 9000 WM
Remedy
Switch on breaker
Check boiler -
Programmer ON
Quantity
1
1
1
1
1
1
1
1
07