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Building Technologies Modular Heating Controller RMH760B CE1P3133en
HVAC Products 8 Main controller and primary controller 05.02.2007
Number Text Effect
59
Main contr return sens
error
Nonurgent message; must be acknowl-
edged
Main controller and primary controller behave as if no return temperature sensor was
present. Limitation of the return temperature is inactive.
Number Text Effect
2202
Main contr h’request mod
error
Nonurgent message; must not be acknowl-
edged
2203
P’contr h’req error
Nonurgent message; must not be acknowl-
edged
An error at the input is interpreted as “No heat demand“.
Number Text Effect
2491 [Main pump] overload
Nonurgent message.
Acknowledgement can be parameterized;
factory setting: “Acknowledge and reset“
2492 [Main pump B] overload
Nonurgent message.
Acknowledgement can be parameterized;
factory setting: “Acknowledge and reset“
2493
[Main pump] no flow Nonurgent message; must be acknowl-
edged and reset
2494 [Main pump B] no flow
Nonurgent message; must be acknowl-
edged and reset
2495
[Main pump B] fault Urgent message; must not be acknowl-
edged. Plant stop
Number Text Effect
2501
[System pump] overload Nonurgent message.
Acknowledgement can be parameterized;
factory setting: „Acknowledge and reset”
2502
[System pump B] over-
load
Nonurgent message.
Acknowledgement can be parameterized;
factory setting: „Acknowledge and reset”
2503
[System pump] no flow Nonurgent message; must be acknowl-
edged and reset
2504
[System pump] no flow B Nonurgent message; must be acknowl-
edged and reset
2505
[System pump] fault Urgent message; must not be acknowl-
edged. Plant stop
8.11 Diagnostic choices
Main menu > Main controller > Inputs/setpoints
Main menu > Primary controller > Inputs/setpoints
Operating line Range
Actual value flow temp …°C
Flow temperature setpoint …°C
Actual value return temp …°C
Return temperature max …°C
Heat request modulating ---- ( = not connected) / …°C
Heating curve request 2-pos 0 / 1 (1 = closed)
DHW request 2-pos 0 / 1 (1 = closed)
Frost prot request 2-pos 0 / 1 (1 = closed)
Error in connection with
heat requests
Faulty main pump
Faulty system pump
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