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question 1：The whole radiator is not hot. |
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| answer 1：open the FLOW and RETURN of valve |
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question 2：The radiator is whole not hot(the valve has been already opened) |
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| The document is being reorganized |
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question 3：The temperature of the radiator's tube isn't enough,the indoor temperture leads low. |
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| answer 3 :FLOW the water temperature degree low, raise it. It is checked system by professional. |
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question 4:FLOW and RETURN of valve to leak by inside(close to radiator) |
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| answer 4: close the RETURN valve .and notify installation personnel to maintain. |
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Question 5: FLOW and RETURN of valve outside (close to supervisor tube) leak |
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| answer 5: Notify professional to close system valve, and installation personnel to maintain. |
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