Manual Honeywell CM727 (page 9 of 12) (English)

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Installation Guide 9

4.5 Installer Parameters Table

4.5.1 Category 1 - Room Thermostat Settings

Note

1) Remember to always press the green button to conﬁrm that you want to store your new Installer Set-

Up setting. To exit the Installer Mode press the AUTO or MAN button.

Parameter Parameter

No.

Factory Default Setting Optional Setting

Category 1 Parameters – Room Thermostat Settings

Display Description Display Description

AM-PM / 24hr

Display

1:CL 12 12 hr – AM/PM clock

display format

24 24 hr clock display format

Reset Time/ Temp

Program

2:rP 1 Time / Temp proﬁle

set to factory default

Changes to 0 when

one of the time/temp

proﬁles are changed

0 Time / Temperature are as

programmed

To restore the factory proﬁle set to 1

Auto Summer/

Winter Time

Change

3:tC 1 Auto Summer/Winter

Time Change

Enabled

0 Auto Summer/Winter Time Change

Disabled

LCD Backlighting 5:bL 1 Backlighting Enable 0 Backlighting Disabled

Upper Temp Limit 6:uL 35 35°C Upper Temp.

Limit

21 to

34

21°C to 34°C adjustment in 1°C

steps

Lower Temp Limit 7:LL 5 5°C Lower Temp.

Limit

5 to 21 6°C to 21°C adjustment in 1°C steps

Optimisation 8:OP 0 Optimisation

Disabled

1 Optimisation Enabled

Temperature

Offset

12:tO 0 No temperature

offset

-3 to

+3

-3°C to +3°C adjustment in 0.1°C

steps

Proportional Band

Width

13:Pb 1.5 Proportional band of

1.5 degrees

1.6 to

3.0

1.6°C to 3.0°C adjustment in 0.1°C

steps

Scheduled

Maintenance Alert

Period (months)

19:SP 0 Scheduled

Maintenance Alert

Period disabled

0 to 48 0 to 48 months adjustment in 1

month steps

Reset Parameters

to Factory

Defaults

20:FS 1 All settings at factory

defaults

Changes to 0 when

one of the parameter

is changed

0 Settings are as modiﬁed above

To restore the factory proﬁle set to 1

1

My heating is not coming on when I set it to the manual button Submitted on 26-5-2023 at 15:50
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- It may be because the room temperature is already at temp. Try turning the temp up and see if it fires. Answered on 27-5-2023 at 08:53
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When I set my thermostat to manual the heating doesn’t come on, where am I going wrong. Thank you Submitted on 26-5-2023 at 15:49
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We’re going away for 4 weeks soon , I’ve set the Thermos on Auto to come on twice a day for an hour to prevent any freezing in the pipes- will the thermos still come on automatically between the set times if the temp drops below a certain level? In other words, will our heating be on full time when we’re away during a cold snap? Obviously this is going to incur high charges for us .Any advice appreciated Submitted on 12-12-2022 at 06:43
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Hi I have a CM721 and CM727 Honeywell Thermostat.
I cannot manage to keep the temperature to remain constant, IE At night I sometimes need 23 C to stay warm during the night ( otherwise I get cramp! )
Which button/s do I press and in which sequence please ?
Many Thanks,

Alan
Submitted on 15-11-2021 at 12:31
Reply Report abuse
- You’d have to leave the thermostat on manual and adjust the temperature with the up and down arrow buttons to the right hand side of the screen Answered on 15-11-2021 at 12:33
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Why does the heating come on outside of the times I have set it to come on, when in auto mode? Submitted on 3-11-2021 at 08:16
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