Honeywell Honeywell Thermostat CM61NG User's Manual

Honeywell Thermostats User's Manual - Honeywell Thermostat CM61NG.
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What is an RF Programmable Thermostat?

A Honeywell Radio Frequency (RF) programmable thermostat is a
thermostat that controls your heating system so that you can have
comfortable temperatures when you are at home and energy savings
when you are out. With RF communication there is no need to provide
a wired connection between thermostat and boiler. The

 

CM61NG

can therefore be installed without disrupting your room decor. These
instructions explain how to program and operate your

 

CM61NG to

get the most comfort at the least cost.

What will the  CM61NG Programmable Thermo-
stat do for me?

• Wireless connection to the boiler allows you to mount the

CM61NG in your room without disrupting the decor

• Armchair programming lets you set up your

 

CM61NG while

resting comfortably in your armchair

• Optimum Start means that the

 

CM61NG will switch on your

heating system so that your desired comfort temperature is
reached at the programmed time, thus avoiding unnecessary boiler
firing

• Attractive slim styling compatible with any room decor
• 6 daily independent temperature levels let you set any 6

temperatures from 5 to 30°C to match your daily lifestyle

• Holiday button saves energy by letting you reduce the tempera-

ture for 1 to 99 days while you are on holiday, returning to normal
operation on the day you return

• Memory holds the user program indefinitely so that it is never lost

even if you take the batteries out

What is Optimum Start?

Instead of switching on the heating at the set time every day, the

CM61NG will delay the start time to the latest possible moment, so

that unnecessary heating is avoided. All you have to do is set the time
when you want comfort temperature and the

 

CM61NG will then

decide when to turn the heating on, thereby ensuring your comfort.

42010475-003 R1

honeywell

CM61NG Trouble-Shooting Guide

What if something happens to my heating system? How can I check that the  CM61NG is working?

See the troubleshooting guide below. If you need assistance after this call your installer.

Warning.
This product and its associated documentation and packaging are protected by various intellectual property rights belonging to Honeywell Inc and its
subsidiaries and existing under the laws of the UK and other countries. These intellectual and property rights may include patent applications,
registered designs, unregistered designs, registered trade marks, unregistered trade marks and copyrights and also include the following UK registra-
tion rights:
UK patent application number 98062207.8
UK registered design numbers 2073334, 2073340 and 2073343.

honeywell

Honeywell Control Systems Ltd.
Arlington Business Park
Bracknell, Berkshire RG12 1EB
Tel: 01344 656000

www.honeywell.com/uk/homes.htm

Symptom

Blank display

Display shows flashing ‘battery’
symbol

Display shows ‘flame’   symbol but
heating does not switch on

Display works but heating does not
switch on (HC60NG LEDs are off or
green one is on)

HC60NG red LED is constantly on or
flashing

Heating switches on or off too slowly
or too quickly

Temperature swings between too hot
and too cold

Display show ‘spanner’ symbol

Possible Cause

No batteries

Wrong battery orientation

Exhausted batteries

Improper battery compartment insertion

Batteries need replacing

The heating is not required at this
moment

Boiler switched off

Wrong electrical connection

RF communication lost due to the
wrong location of the room unit

RF communication fault

CM61NG not set correctly for your

system

CM61NG not set correctly for your

system

Fault in the

 

CM61NG

Remedy

Check that the batteries are in the battery compartment and that the
paper tab has been pulled out

Check that the batteries have been installed in the correct orientation

Replace batteries

Remove battery compartment and re-insert

Change batteries as described previously

The heat demand is sent to the relay box as a value between 0-100%.
The relay box will adjust the boiler on time to meet this requirement.
That is why the heating will be off sometimes even if the ‘flame’ 
symbol is displayed. To check if RF system is communicating properly
press the TEMPerature  UP button to increase the set temperature a
few degrees above the current temperature. The heating should come
on after a few seconds

Switch the boiler on

Call electrical installer to check the boiler and relay box power supply
as well as the connection between the boiler and the relay box

Hook the room unit back on the wall bracket or replace the room unit
on the table stand to the position where RF communication was
reliable.

Call installer

NOTE: You can control the boiler manually when the RF communica-
tion is lost:
Press the HC60NG push button to switch the boiler on and off. When
the green LED is on – the boiler is on.

Call installer

Call installer

Remove the battery compartment and re-insert it. If the ‘spanner’
symbol does not clear itself in a few minutes call the installer

RF Programmable Thermostat

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