OPERATION
TO TURN THE HEATER OFF
•Turn the heater OFF by pressing and releasing the heater ‘Power’ button. The burner, digital display and all
LED’s will extinguish however the fan will continue to operate for a few minutes to cool down the heater and
prevent a build up of residual heat (fan run on). Note: The power supply should not be turned off during this cool
down period as this will prevent the fan from running on.
•The heater may be turned off at the power point when the heater fans stop operating.
RAISING OR LOWERING THE SET TEMPERATURE
The set temperature is the temperature setting the heater will heat the room to. When the heater is turned ON, the
heater will automatically operate the burner to heat the room to the desired set temperature. When the room reaches
the set temperature the heater will automatically turn the burner OFF.
To Raise the Set Temperature: Press and release the ▲ button once to raise the set temperature by 1ºC. Each
consecutive press and release of the ▲ button will raise the set temperature in increments of 1ºC up to a maximum of
26ºC. Note: After 26ºC a 'H' setting is available. The 'H' setting is for Service procedures only and should not be
selected. When setting the temperature to 'H' setting, the heater will monitor any abnormal high room air temperature
which is outside the normal temperature selection range. Should high room temperature be detected, the heater will
shut down and display error code 16 which will require the heater to be reset and the temperature setting changed to
a value from 16 ~ 26 (refer to “Fault Indication” on page 29).
To Lower the Set Temperature: Press and release the ▼ button once to lower the set temperature by 1ºC. Each
consecutive press and release of the ▼ button will lower the set temperature in increments of 1ºCdown to a minimum
of 16ºC. Note: before 16ºC an 'L' setting is available. The 'L' setting is for Servicing procedures and should not be
selected. If set on 'L' the heaters burner will not turn on at room temperatures above 10°C.
SETTING THE TIME
The heater will operate without the time being set however timer function(s) will not operate. Set or change the time
as follows:
1. Press and release the ‘Set Times’ button once. --:-- (or a previously entered time) will appear on the digital
display and the 'Clock' LED and ‘AM or PM’ will illuminate green.
2. Press and hold down the ▲ or ▼ button. The display will change in 1 minute increments until the next hour is
reached at which time the display will then change in 1 hour increments until the button is released. When the
button is released the ▲ or ▼ button can then be pressed and released to fine tune the time in 1 minute
increments.
3. When the correct time has been entered, press and release the ‘Set Times’ button 5 times to accept the setting.
The time will be saved and the display will revert to show the current set and room temperatures.
TIMER 1 & TIMER 2 OPERATION
Two on/off timers are available (Timer 1 & Timer 2) and each timer can be programmed to automatically turn the
heater ON and OFF. For a timer to operate, the actual time must be set, the timers ON and OFF times must be
programmed, the heaters ‘Power’ button must be turned on and the timer must be turned on (selected).
Note: PRS series room heaters have a pre-heat function that operates the burner up to one hour prior to the
programmed starting time of a timer to warm the room SO THAT THE ROOM REACHES THE REQUIRED
TEMPERATURE WHEN THE PROGRAMMED ON TIME IS REACHED. This pre-heat function is automatic and
will always occur when the heater is turned on and a timer has been programmed and selected.
Programming Timer 1 and/or Timer 2 operating Times
1. Press and release the ‘Set Times’ button twice to enter timer programmingmode. The ‘Timer 1’ LED and ‘Timer
1 On’ LED will illuminate and the timer 1 ‘on time’ will be shown on the digital display.
2. To program Timer 1 ‘on time’, press and hold down the ▲ or ▼ button. The display will change in 1 minute
increments until the next hour is reached at which time the display willthen change in 1 hour increments until the
button is released. When the button is released the ▲ or ▼ button can then be pressed and released to fine tune
the time in 1 minute increments.
3. Press and release the ‘Set Times’ button once. The ‘Timer 1 Off’ LED will illuminate and the Timer 1 ‘off time’ will
be shown on the digital display. The Timer 1 ‘off time’ can now be programmed by operating the ▲ and ▼ arrow
buttons as previously explained in step 2.
4. Press and release the ‘Set Times’ button once. The ‘Timer 2’ LED and ‘Timer 2 On’ LED will illuminate and the
Timer 2 ‘on time’ will be shownon the digital display. The Timer 2 ‘on time’ can now be programmed by operating
the ▲ and ▼ arrow buttons as previously explained in step 2.
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